CN1237858C - Method for re-manufacturing flame-proof outer shell - Google Patents

Abstract

The present invention relates to a method for reproducing a flameproof outer shell, which belongs to the field of the utilization of waste equipment by industrial production. The present invention combines various technology with surface engineering technology as a core, and carries out reproduction with a waste flameproof outer shell as a blank. The present invention can produce a multifunctional flameproof outer shell by industrial production, and the multifunctional flameproof outer shell has a flameproof surface and has the characteristics of high hardness, corrosion resistance, long service life, etc. The method can change the once usage (from steel raw materials to the manufacture of new outer shells to the usage to the major failure to the abandonment) of flameproof outer shells to multiple repeated usage (from waste outer shells to reproduction to reuse to refailure to reproduction to reuse, etc., multiple circulation). A production line formed by the method can reproduce switches, electric motors and other flameproof outer shells. The present invention can realize multiple purposes by one production line.

Description

A kind of flameproof enclosure method of making again

Technical field:

The invention belongs to waste and old equipment industrialization and utilize the field.

Technical background

Explosion-proof device occupies critical role in national economy, it uses the place that explosion hazard is arranged in mine, chemical industry etc. usually, in order to prevent actuation gas coal dust combustibles, electric fuse is contained in " flameproof enclosure " lining, has just made explosion-proof device.Flameproof enclosure is the critical component of explosion-proof device, is the basic feature that is different from conventional equipment.Flameproof enclosure is concerning the people's life security and huge property safety, and GB is extremely tight to its requirement, very easily damages in the use, scraps.The damage of flameproof enclosure, scrap, the overwhelming majority is due to explosion suppresion surface " loses quick-fried ".It is multiple that explosion-proof device mainly contains explosion-proof switch, explosion separation motor, flameproof transformer, flame proof compact electric apparatus etc.Flameproof enclosure is to make with steel plate, cast steel, cast iron mostly.GB 3836.1-2000 GB 3836.2-2000 has stipulated the structural requirement of flameproof enclosure.

Flameproof enclosure should have enough mechanical strengths, makes it to bear blast pressure and external impacts and does not damage or be out of shape.Explosion suppresion surface also must have enough mechanical strengths, when the HTHP flame of shell implode outwards sprays by the flame proof gap, if insufficient strength then can produce gross distortion, thereby has changed the joint clearance, has influenced the explosion insulation performance of shell.Whole flame proofs gap of forming whole flameproof enclosure, all should make can flame proof structure.The surface roughness of flameproof joint should not be higher than Ra 6.3, and joystick must not be higher than Ra 3.2.Explosion suppresion surface is forbidden corrosion is arranged, damage, pit, in order to avoid change the flame proof gap, makes explosion suppresion surface lose flame-out effect and cooling effect, when HTHP flame ejection shell, ignites the outer explosive of shell.

Flameproof enclosure " inefficacy " is named " losing quick-fried " usually, promptly loses explosion insulation performance, and flameproof enclosure lost efficacy the back by the rules maintenance, scrapped in the time of can not overhauling.Flameproof enclosure after repairing is had strict standard-required, and this point is strict more than most plant equipment, and a lot of plant equipment have the repair quality standard, but the concrete maintenance procedure that does not have country (or ministries and commissions) to work out, the maintenance procedure that has only enterprise to order.Former " flame-proof electric equipment shell maintenance procedure " promulgated by the ministries or commissions of the Central Government is as follows to the processing regulation summary of flameproof enclosure:

1#. general factories and miness must not be repaired, and must be repaired by special repair shop, should be responsible for by the special messenger who was subjected to explosion-proof knowledge training.

2#. explosion suppresion surface has following several defective to repair;

A. the screw defective in the 5mm scope all around.

B. the defective on the flame proof faying face corner.

C. the defective on the Huo Dong explosion suppresion surface.

D.8mm reach the defective on the following explosion suppresion surface.

E., the foundry goods that loose phenomenon is arranged on the explosion suppresion surface.

When the defective on the f. static explosion suppresion surface makes remaining explosion suppresion surface effective length be lower than setting.

3#. the flameproof enclosure after repairing meets the GB requirement, and is carried out in accordance with regulations the hydraulic test, to check anti-quick-fried intensity.

4#. repair the main method of flameproof enclosure is that attached cover (referring to repair movable explosion suppresion surface) is repaired, inlayed to machine work, some scolding tin.

5#. explosion suppresion surface is after machine work, its flange thickness also should be more than or equal to the 85-90% of former design thickness.

6#. the explosion suppresion surface roughness after repairing should be smaller or equal to the regulation requirement.

7#. the flameproof enclosure after repairing should guarantee not hinder the stress deformation of explosion-proof performance after assembling.

The rust preventing of 8#, repairing back explosion suppresion surface mainly is phosphatization and is coated with 204-1 antirust oil.

In a word, to the flameproof enclosure repair method mainly is a soldering, mechanic, edge cover, phosphatization etc., anticorrosion, repair after, must have flame proof (being that flameproof enclosure structure parameter and intensity meet the requirements), stress deformation does not take place in durability (anti-corrosive properties, damage-resistant good).

Owing to there is not advanced and mature technology, above-mentioned " rules " were not revised in 40 years, and repair method is similar both at home and abroad.

It all is to begin processing and manufacturing from raw material such as steel plate, cast irons that the our times various countries make the main process of flameproof enclosure, through operations such as punching press (or casting), welding, machine works, makes product.

Current, advanced surface engineering technology is widely used in the maintenance field, but does not see the report that is applied in explosion-proof device maintenance aspect.

The composite surface engineering is meant two or more surface engineering technologies is combined with each other with suitable order and method, or serves as the technology of basis manufacturing composite coating with certain surface engineering technology.Compound by these, can bring into play its advantage separately contained or the different coating material, organic cooperation is learnt from other's strong points to offset one's weaknesses, thereby can obtain optimum surface property, reaches the effect of 1+1＞2.

The composite surface engineering has thermo-chemical treatment and brush plating, chemical plating compound, and thermal spraying is compound with paint, and it is compound etc. that thermal spraying and high-frequency induction heating, plasma heat.

The laser surface modification technology of metallic article is the new and high technology that the mid-1970s grows up, laser has high radiance, high directivity, high monochromaticity and high coherence's four characteristics, this is that ordinary light source is incomparable, after the laser beam line focus, the temperature of several thousand degree and even ten thousand degree can be near focus, produced, therefore nearly all material can be heated.The laser surface modification technology mainly is to utilize the high radiance of laser, high directivity and high monochromaticity three big characteristics.When laser action during, can improve its surface property significantly in the metal surface.The laser surface modification technology comprises laser transformation hardening, laser melting coating-alloying, and lam, laser shock peening, laser quenching etc., their common theoretical foundation is the Reciprocity of Laser ﹠ Materials rule.Laser surface modification technology and other sufacing combine, the second generation that has been born surface engineering technology is the laser surface composite modification technology, it is the advantage of conventional surface modification technology and laser surface modification comprehensively, remedy even eliminated limitation separately, thereby showed the great potential and the market competitiveness.As to the surface of low-carbon steel modification, can spray that one deck is corrosion-resistant, the high hardness alloy powder, use laser melting coating again, will form the existing high rigidity of one deck at surface of low-carbon steel like this, the surface functional layer of highly corrosion resistant is arranged again.

HVAS is that the metal or alloy silk is made two consumable electrodes, drive by motor gear box, intersect the generation short circuit and starting arc and fusing at custom-designed gun slot, be atomized into particulate and spray to through pretreated surface of the work the formation coating with ultrasonic at a high speed by compressed air.Its bond strength height approaches the bond strength of plasma sprayed coating, and cost is low, can adopt sprayed on material such as stainless steel, high-carbon steel, steel alloy, aluminium, zinc, is used for repairing or anticorrosion.

The brush coating technology is to wrap absorbent material such as cotton at anode surface, makes it inhale full plating bath, and reciprocating motion on as the part of negative electrode then makes coating be deposited on electroplating process on the part.In plating bath, add nano material, just can be made into nano coating.

Explosive welding is the new and high technology a kind of of great practical value of carrying out the intermetallic welding and producing metallic composite as the energy with explosive.Its maximum characteristics can be with identical, particularly different and metallic combination arbitrarily in a flash.

Biological phytate is anticorrosion to be to extract phytic acid from plant, utilizes the biological phytate of the synthetic environmental protection anti-corrosion product of biotechnology, and it is anticorrosion that it is coated in steel surface, and every index is all above the decay resistance of traditional phosphating coat.

Melting and explosion is a kind of noncontact forceful electric power process technology, in the course of processing, between charged tool-electrode and surface of the work, produce special electro ultrafiltration, form highdensity forceful electric power electron current, make the local fusing rapidly of workpiece surface and quick-fried from, reach satisfactory dimensional accuracy and roughness.All material processed no matter hard, soft, viscosity how, all can be carried out high efficiency processing, are the jinxs of high hardness material.

For industrialization utilizes waste and old equipment, walk sustainable development path, Xu Bin scholar academician proposes " green remanufacturing " theory, he is defined as follows: " Green Remanufacture Project is to be guidance with cycle product life-cycle design and management; with high-quality; efficient; material-saving; environmental protection is a target; is means with advanced technology and industrialization production, waste product is repaired and the general name of a series of technical measures such as transformation and engineering activity, that is to say Green Remanufacture Project uses advanced sufacing, multiple new and high technologies such as composite surface technology, the industrialization mode of production, strict product quality management and market management patterns are regenerated waste product in high quality " (drawing) from " Chinese Surface Engineering " magazine second phase calendar year 2001.

The green remanufacturing technology is the new and high technology of rising the nineties in 20th century, has formed industrial colony in states such as the U.S., Britain, and forward tradition manufacturing industry is assaulted.State Economic and Trade Commission classifies the green remanufacturing technology as focus technology innovation subsidy project in 1998,1999." Green Remanufacture Project and in the application prospect of China " lists Chinese Academy of Engineering's consulting item in, and be subjected to the relevant leader of State Council and pay attention to, obtaining " state natural sciences fund " subsidizes, classify National Key Laboratory's project as, list the Tenth Five-year plan in, now set up " equipment re-manufacturing technology science and techniques of defence key lab ".Problem obtains state natural sciences fund key project subsidy (drawing from 2002 the 4th phases of " Chinese Surface Engineering " magazine) " to make basic theory and key technology again ".

Summary of the invention

The major defect of the flameproof enclosure of current trend is: explosion suppresion surface hardness low (about HRC15), and corrosion-resistant (after the phosphatization 2-6 month) is easily lost quick-friedly, and the life-span is short, function singleness, explosion-proof switch does not prevent to send electricity without authorization, prevents to uncap without authorization operating function.Waste and old flameproof enclosure no longer utilizes, and directly smelts to be iron and steel.The objective of the invention is waste and old flameproof enclosure is manufactured " long-life is multi-functional " flameproof enclosure again, flameproof enclosure " is repeatedly used ".

The present invention covers the composite coating that alloy materials such as nickel, chromium, manganese, tungsten are formed on waste and old flameproof enclosure explosion suppresion surface; Coating anticorrosive, resistive connection dew, anti-electric arc, reflecting coating on the outer surface in the enclosure.The thickness structure of these coatings, material prescription have particularity, the creativeness that adapts to the colliery adverse circumstances, it makes low carbon steel substrate have the explosion suppresion surface and the excellent shell surfaces externally and internally of high rigidity, highly corrosion resistant, high resistance to marring, anti-gas and dust explosion impact, compare the explosion suppresion surface and the surfaces externally and internally of traditional flameproof enclosure, security reliability has produced qualitative leap.The present invention also is transformed into the old locking device of explosion-proof switch and can prevents to send electricity without authorization, " the two anti-locking devices " of the operation that prevents to uncap without authorization.

Repair the defective of flameproof enclosure with maintenance technique: one, be difficult to make the shell of fixing to satisfy following three conditions simultaneously: flame proof (being intensity and explosion separation structure parameter) meets GB, durability (mainly referring to explosion suppresion surface and surfaces externally and internally anticorrosion and resistance to marring) is good, and stress deformation does not take place.So " flame-proof electric equipment shell maintenance procedure " only allows light maintenance sub-fraction flameproof enclosure, most of waste and old flameproof enclosure can only be scrapped.Two, can not repair again after repairing several times, for example repair explosion suppresion surface, though explosion suppresion surface leaves allowance with grinding, turning processing, but the worker is thinner further, can not process until having arrived specific thickness, scrap only, can not in economic life period, repeated multiple times reuse.Three, the flameproof enclosure after the maintenance is difficult to reach the GB requirement, and is more impossible above the GB requirement.Four, the flameproof enclosure after the maintenance is not sought unity of standard, and the product of same model is because of producer's difference, and some part, some size be difference also, and is still different after the maintenance, brings inconvenience for actual use, purchase accessory.Five, can not industrialization utilize waste and old flameproof enclosure.

The present invention can carry out industrialization to the waste and old flameproof enclosure of the overwhelming majority and handle, streamline production, and making has the standardization manufacture method again in the flameproof enclosure process, the unified standard that manufactures a product is again arranged, and quality meets or exceeds the GB requirement.Same flameproof enclosure can repeated multiple times be made again, re-use, end up to economic life period.

Want many consumes energy with the new flameproof enclosure of raw material manufacturing,, also want many consumes energy making new flameproof enclosure again after the waste and old flameproof enclosure steel-making, also will be to airborne release carbon dioxide, contaminated environment.The present invention makes as blank with waste and old flameproof enclosure again, can overcome these defectives.

Handle the flameproof enclosure performance with general surface engineering technology and be difficult to reach requirement, handle with high-new surface engineering technology, cost is too high, loses practical significance.The present invention's combination and the combination of innovation surface engineering technology solve these problems.

Technical solution of the present invention is made up by following operation:

Waste and old flameproof enclosure decontamination → waste and old flameproof enclosure dismounting → detection classification → flameproof enclosure is cleared up old lacquer → standardized method improvement flameproof enclosure → sufacing combined method processing explosion suppresion surface → Ageing Treatment → explosion suppresion surface and is processed → dispatch from the factory pressure test → flameproof enclosure surfaces externally and internally technical finesse → flameproof enclosure assembling → product inspection, evaluation → product marking → finished product warehouse-in

Below describe per pass operation content in detail:

Waste and old flameproof enclosure decontamination: after waste and old explosion-proof device reclaims, usually greasy dirt, coal slime are serious, necessary first decontamination, the decontamination method Cleaning by High Pressure Water Jet, use purpose-built washing equipment or make cleaning equipment by oneself with elements such as emulsion pump, special-purpose spray gun, nozzles, several～tens of water or an aqueous solution pressurization atmospheric pressure is washed,, can also adopt dipping, the manual method cleaning such as scrub part or finding according to the greasy dirt situation.The aqueous solution comprises emulsion, surfactant solution, cleaning agent etc.Waste and old flameproof enclosure decontamination operation block diagram such as Fig. 8, this technology key are recycling after the waste water treatment of cleaning flameproof enclosure, rather than careless exhaust emission environment, waste resource.Also can blow, remove surperficial dirt with pressure air.Can also bake degreasing with flame.

The dismounting of waste and old flameproof enclosure: waste and old flameproof enclosure is disassembled into basic part, and basic part refers to the part that can not dismantle again with common tools such as pliers, screwdriver, spanners, so that detection is classified.Loosening earlier on disassembly table during dismounting, streamline everyone or equipment dismounting of a few people can not be gone up in dismounting streamline dismounting on the back yet.The dismounting streamline is applicable to operation in enormous quantities, and waste and old equipment moves on supply line, and the workman stands in both sides and dismantles the part of oneself being responsible for dismounting respectively.Waste and old flameproof enclosure dismounting operation block diagram such as Fig. 9.

Detect classification: the parts of dismounting are detected respectively in accordance with regulations, parts are divided into some kinds, variety classes is adopted different ways according to criteria for classification.Detection method mainly contains direct observational method, and measurer instrument measurement method, hydraulic test method, online automatic detection method etc., sorting technique have flameproof enclosure classification facture etc.

Direct observational method is exactly that detected parts are compared with similar standarized component, according to related standards, rules requirement, whether Direct observation, more detected shell are out of shape, explosion suppresion surface has or not scar, whether electric component burns out, whether iron core burns out etc., and perform record.

Measurer instrument measurement method is used clearance gauge, roughness sample piece etc. exactly, by standard detection flame proof gap, and the explosion suppresion surface roughness; With parameters such as ruler, vernier caliper measurement flange thickness, pore sizes; Detect iron core iron loss height, the insulation quality of pulling down from motor, transformer with instrument; Or the like.Perform every record.

Hydraulic test method is with hydraulic pressure experimental examination flameproof enclosure whether crack, pore, sand holes to be arranged.The water test unit principle as shown in Figure 1, one of characteristics of this experimental rig are not that test water recycles, not waste.

The online automatic detection method is that standard explosion-proof device data information, image document compiled program are deposited in computer, with the waste and old explosion-proof device part on the scanner scanning streamline, scan-data is imported the computer comparative analysis, tells type.

After testing, classification is handled.

Flameproof enclosure classification facture: except that housing (remainder behind the detachable part of dismounting flameproof enclosure), big tegillum, terminal box, electric components such as loudspeaker mouth, base, binding post, iron cores, by newly good, newly bad, old friendship, old evil idea are divided into four classes, basic shell, big tegillum, terminal box are divided into following a few class, the A--casing deformation, the B--shell bursts apart, C--shell screw fractures, spiral shell button on the D--flameproof enclosure damages, the corrosion of E--explosion suppresion surface, mechanical scar appears in the F--explosion suppresion surface, transfinites in G--explosion suppresion surface gap.Every class all has criterion, according to standard determination.

It is newly good, the old friendship class, recycling that part belongs to.Newly bad, old bad, repair by standard.Genus category-B and category-A distortion exceed standard, and generally can not make again.That category-A distortion does not exceed standard, C, D, E, F, G class enter next procedure and repair by standard, improve.

According to the former specifications and models classification of dispatching from the factory, be divided into classes such as motor, switch, be divided into classes such as 80A, 120A, 300A in the switch again, also can be divided into some classes by manufacturing firm.

Flameproof enclosure is cleared up old lacquer: depainting technology has abrasive blasting depainting, organic solvent to remove old coat of paint, buck depainting, high temperature depainting etc., selects a kind of proper method as required.This operation is carried out after also can being placed on " the sufacing combined method is handled explosion suppresion surface " operation, selects as the case may be.

The abrasive blasting depainting to waste and old flameproof enclosure, is removed old coat of paint metal surface on by the percussion of abrasive material with the abrasive material high velocity jet.Select blast injection or centrifugal atomization as required.Select a kind of in the abrasive materials such as iron slag, diamond dust, steel cuttings, sial glass slag as the case may be for use.Conveniently to draw materials, cost is low, and the efficient height does not damage intact explosion suppresion surface on the matrix and screw for well.With material shutoff screw or other surfaces that needs protection such as rubber.

The clear depainting of organic solvent is coated in paint stripper (T-1, T-2, T-3) or other organic solvents and removes waste and old coat of paint on the waste and old coat of paint.

The buck depainting is placed on waste and old shell in " alkaline paint removal water " (containing NaOH, sodium carbonate, surfactant etc.) groove and removes old coat of paint.

The high temperature depainting with the roasting old lacquer of high temperature methods such as oxy-acetylene flame, electric furnace baking, removes it.

Standardized method improves flameproof enclosure: formulate the flameproof enclosure standard of making again, improve by standard making flameproof enclosure again, improving one's methods mainly is to repair, change accessory or make part again, makes the flameproof enclosure of different manufacturers reach the standardization requirement after making again.As: improve element sizes such as loudspeaker mouth, terminal box and lid thereof, isolating switch handgrip, binding post hole, bolt, base and be unified size, unified shape; Repair or prepare new iron core, ready for assembling; The defectives such as sand holes on the housing are repaired in electric welding; Make the new base of switch, change old base; Eliminate old model, be modified into the new model flameproof enclosure, superseded as QC83 series, but the not change of flameproof enclosure pattern can be modified into new model with it; Improve rotor, bearing, iron core, reach standard-required.

Improve switch " old locking device " (all undesirable) for " two anti-locking devices " (locking device that can " prevent to send without authorization electricity, prevent the operation of uncapping without authorization "), reach 445 requirements of new edition " safety regulations in coal mine " (calendar year 2001).Method is as follows:

A type: as Fig. 2 A type two anti-locking device schematic diagrames; be used for QC83; QC815; QC810; BQD6; BQD10; BQS1; the DW80 series switch; the electric coal drill integrated protection; the illumination integrated protection; and the switch of other and QC83 series switch locking device structural similarity; its old locking device is modified into structure as shown in Figure 2; step is: make A type two anti-locking devices shown in Figure 2 earlier; cut off old locking device with oxy-acetylene flame again; install new " two anti-locking devices "; it can only be with corresponding key release or locking; reach and prevent to send without authorization electricity, prevent the operation purpose of uncapping without authorization.

Type B: as Fig. 3 Type B two anti-locking device schematic diagrames, be used to improve QJZ-300/1140 circuit breaker lock device and other similar structures, step is: go up fluting (for lock core (25) locking deadlock lever) at deadlock lever (23), go up fluting at switch panel (32), the condom (24) of burn-oning is installed lock core (25) in the condom.

C type: Fig. 4 C type two anti-locking device schematic diagrames, be used for BKD1, the TKXK series small-sized magnetic starter of mine explosion-suppression and other similar structures, reach " preventing to send without authorization; prevent the operation of uncapping without authorization " function, by structure fabrication C type two anti-locking devices shown in Figure 4, distinguish locking press button and switch cover plate bolt then.Lock(ing) bolt step: lock core (25) is installed in Fig. 4 condom (24), mounting distance cover (43) on the bolt that will lock, condom (24) is buckled on the bolt (42), tighten lock core (25), because the limit of cover plate (41) is to the barrier effect of condom, condom can not be turn-taked around bolt, because the barrier effect of lock core (25), condom can not be taken off from bolt, and instruments such as spanner can not contact bolt, also just twists covered plate.With the key lock core (25) of back-outing, can take off condom (24), handled easily bolt (42).Bolt with sending eletric button to replace, is changed slightly with reference to Fig. 4, can be reached " preventing to send without authorization " purpose.

D type: be used for BGP5, BPZ1, BGP, BGP3, BGP8 series flameproof high-voltage vacuum distribution equipment and other similar structures, be installed in the isolating switch handgrip respectively and main chamber covers, when needing locking, distinguish operational lock with a few cover self-contained units.Adopt method shown in Figure 4 when locking main chamber lid, during the locking isolating switch handgrip, fluting or punching on the isolating switch handgrip are with reference to Fig. 2, method shown in Figure 3 locking.

The sufacing combined method is handled explosion suppresion surface: in light of the circumstances, as required, the kinds of surface technical method is combined, handle several (same or several) explosion suppresion surfaces, handle the explosion suppresion surface of same flameproof enclosure, the different explosion suppresion surfaces that are worth flameproof enclosure of batch processing, the explosion suppresion surface at the different places flameproof enclosure is used in batch processing, and the explosion suppresion surface of the different title model of batch processing flameproof enclosure reaches performance complement, cost reduces, the whole structure optimum.

Handle the sufacing combined method of several explosion suppresion surfaces: have laser explosion suppresion surface modified technique (being called for short JB), cold welding to mend--LASER HEAT TREATMENT--and be coated with biological phytate explosion suppresion surface modification combination process (being called for short LJB), thermal spraying-argon arc welding explosion suppresion surface modification combination process (being called for short RYB), built-up welding-surface anticorrosion processing explosion suppresion surface modification combination process (being called for short DFB), explosive welding (EW) explosion suppresion surface modified technique (being called for short BB), cold-patch weldering-brush plating explosion suppresion surface modification combination process (being called for short LSB) etc.

Laser explosion suppresion surface modified technique, method are to use laser spray gun surfacing, and powder feeding gas is introduced dusty spray in the spray gun, regulate spray gun and substrate surface distance, make laser focusing at substrate surface, like this, drop on the powder and the substrate surface fusion simultaneously at focus position, promptly form coating after the cooling.This technology is applicable to that very big batch makes again, is applicable to the plane counterpart explosion suppresion surface of rule of explosion suppresion surface shape.

Cold welding is mended--LASER HEAT TREATMENT--and is coated with the composite modified technology of biological phytic acid explosion suppresion surface:

Cold-patch weldering: be with defectives such as cold-patch soldering method soldering explosion suppresion surface scar, pit and trachomas.If have one's face covered with is pit and scar, and the cold-patch weldering is too time-consuming, can only weld the defective of the scar degree of depth greater than 0.5mm, to reduce processing thickness, goes up machine tooling then, and soldering is still carried out if sand holes, aperture are arranged in the processing back.

The cold-patch soldering equipment has two kinds, a kind of is the dual-purpose machine of explosion suppresion surface plating weldering, not only can work as brush plating power supply but also can work as the cold-patch welding machine and use, during welding workpiece is placed in the coolant, automatically carry out argon arc welding in limited time with little electric current, in order to avoid cause the stress deformation of " hindering explosion-proof performance ", but the various defectives of soldering explosion suppresion surface, solder joint is a metallurgical binding, the intensity height.Be applicable to the field service explosion suppresion surface, both can have repaired defectives such as pit, but the brush plating explosion suppresion surface prevents corrosion to improve hardness again.The dual-purpose machine block diagram of Fig. 6 explosion suppresion surface plating weldering.

Another kind is an explosion suppresion surface cold-patch welding machine, with reference to the mould repairing machine (patent No.: ZL98206840.9) design improvement, can the various defectives of soldering explosion suppresion surface, and do not hinder the stress deformation of explosion-proof performance, and sufficient intensity is arranged.The dual-purpose machine maintenance of the explosion suppresion surface plating weldering speed of falling into of filling a vacancy is fast, but stays bigger processing capacity, and some also needs machine tooling; Behind the explosion suppresion surface cold-patch welding machine correction of the defect, processing capacity is little, and hand grinding gets final product, and can repair easily and be not easy mach little explosion suppresion surface on the large-scale flameproof enclosure, but productivity ratio is low.

Cold-patch welder skill both can independently be applicable to the field service explosion suppresion surface, can also be used for the explosion suppresion surface modification in that manufactory and LASER HEAT TREATMENT, Way by Brush Plating Technique etc. are compound.

Surface laser heat treatment mainly is to carry out surface hardening with laser, improves hardness, is suitable for the explosion separation motor shell made from cast iron, cast steel.

Also available laser oozes titanium technology, and oozing titanium is a kind of chemical heat treatment process that latest development is got up, corrosion resistance, resistance to wear at double, tens times, tens times raising, hardness is up to 2500--3000HV.To apply on explosion suppresion surface for titanium agent, activator (as ammonium chloride) and filler (as alundum (Al) furnishing paste, laser radiation is infiltrated explosion suppresion surface and is got final product.

Biological phytic acid is coated on the high rigidity explosion suppresion surface after the laser quenching, good corrosion proof function is arranged.Can also be used in anticorrosion on the various explosion suppresion surfaces.

The purpose of cold-patch weldering be defective explosion suppresion surface is mended flat so that carry out surface laser heat treatment and be coated with biological phytate anticorrosion, thereby improve hardness and corrosion resistance, and do not cause stress deformation.Mend with cold welding--laser oozes eliminates heat treatment explosion suppresion surface modification combination process, can not be coated with biological phytate anticorrosion, is applicable to handle the mild steel explosion suppresion surface; Cold welding is mended--laser quenching heat treatment--and is coated with biological phytate explosion suppresion surface modification combination process, can be used for handling the motor explosion suppresion surface (handling this easy crack of class explosion suppresion surface with other pyrometric scale surface technologies) of cast iron, cast steel manufacturing, is applicable to batch process.

Built-up welding---surface anticorrosion is handled explosion suppresion surface modification combination process:

Earlier at the waste and old explosion suppresion surface high alloy of gas shielded arc welding built-up welding one deck hardness; process back brush plating, chemical plating, be coated with biological phytate and other corrosion-resistant strong superficial layer; manufacture " super explosion suppresion surface " again; make its in humid air corrosion resistance greater than stainless steel; hardness HRC 〉=45, and cost is low.If machine work reaches requirement fineness behind the welding wire built-up welding of, high rigidity dual-use function corrosion-resistant with having, can not re-plating, but be coated with one deck antirust oil or other materials increases anti-corrosive properties.

When built-up welding or other high-temperature process; the guard method of explosion suppresion surface bolt hole is: be coated with one deck high temperature-resistant grease around screw; on explosion suppresion surface, put a stainless steel plain cushion that the aperture is smaller or identical facing to bolt hole; from bolt hole, wear a bolts; tightening nuts; plain cushion is fixed on the explosion suppresion surface, along the welding of plain cushion extension, it is welded on the explosion suppresion surface during built-up welding.Explosion suppresion surface bolt hole guard method schematic diagram as shown in Figure 7.

Thermal spraying---argon arc welding combination process:

On the explosion suppresion surface limit,, in frame, spray one deck high rigidity, resistant material on the explosion suppresion surface, carry out machining again, manufacture " super explosion suppresion surface " with thin limit of argon arc welding weldering.The characteristics of this super explosion suppresion surface are: the edge metallurgical binding of sprayed surface, overcome easily the come off defective of peeling of sprayed coating edge, and brought into play the advantage that the sprayed coating cost is low, hardness is high, corrosion resistance is strong.This coating surface structure is suitably for the explosion suppresion surface modification of the motor flameproof enclosure of cast iron, cast steel manufacturing, also can be used for other occasions.

Cold-patch weldering---brush plating explosion suppresion surface combination process:

Some explosion suppresion surface can't use the said method modification, as the garden tubular explosion suppresion surface between motor shaft and end cap, joystick and the hole, and the explosion suppresion surface on the wire box dividing plate, because the position is special or be afraid of distortion, so, weld scar with the cold-patch welding machine earlier, polished then, on explosion suppresion surface, plated wear-resistant, anticorrosion composite deposites such as one deck nickel tungsten, nano material with brush plating method again.Both improved surface characteristic, again resizing.

Explosive welding (EW) explosion suppresion surface modified technique:

According to hardness under the cutting of explosion suppresion surface size, anticorrosion, stalloy that price is suitable, with explosion welding method high rigidity, corrosion-resistant stainless steel skin are welded on the explosion suppresion surface, carry out Surface Machining again and reach regulation fineness.In order to prevent that blast pressure from causing the flameproof enclosure stress deformation, necessary design specialized mold is placed on flameproof enclosure in the mold, does not cause stress deformation when making explosive welding.Perhaps old flameproof enclosure flange is prescinded with oxy-acetylene flame, laser etc., changes the composite material flameproof enclosure flange of producing with explosion welding technique, method be with high rigidity, the explosive welding of corrosion-resistant stainless steel skin on flange blank, machine work then.This method can be used for manufacturer and make flange on the new flameproof enclosure.

Handle the sufacing combined method of same flameproof enclosure explosion suppresion surface: the antirust welding wire of JB---DFB---built-up welding---LSB process combination, the antirust welding wire of DFB---RYB---built-up welding---chemical plating process combination, the DFB---LSB combination, cold-patch weldering--each explosion suppresion surface of machine work---reinforcement explosion suppresion surface process combination etc.Switch flameproof enclosure and explosion suppresion surface schematic diagram such as Fig. 5.Prevent the mechanical damage ability according to subsurface environment extent of corrosion and applying unit, determine concrete process combination.

The antirust welding wire of JB---DFB---built-up welding---LSB process combination: the explosion suppresion surface the most serious, laser surfacing one deck high rigidity, corrosion resistant powder to mechanical damage; To mechanical damage time serious explosion suppresion surface, built-up welding one deck high-hardness stainless steel welding wire, brush plating one deck corrosion resistant surface layer again; The explosion suppresion surface general to mechanical damage, built-up welding one deck good corrosion resistance, the welding wire that hardness is general; To the explosion suppresion surface that just is mechanically damaged once in a while, adopt cold-patch weld repair impaired loci earlier, brush plating one deck anticorrosion alloy of having one's face covered with again; To the explosion suppresion surface that is not mechanically damaged only brush plating one deck anticorrosion alloy get final product.This process combination is applicable to that explosion suppresion surface is in mechanical damage, corrodes all very serious environmental.

The antirust welding wire of DFB---RYB---built-up welding---anticorrosion plating is coated with process combination: the explosion suppresion surface the most serious to mechanical damage, and built-up welding one deck high-hardness stainless steel welding wire plates or is coated with one deck corrosion resistant surface layer again; To mechanical damage time serious explosion suppresion surface, use thermal spraying---the modification of argon arc welding combination process; The explosion suppresion surface general to mechanical damage, built-up welding one deck good corrosion resistance, the welding wire that hardness is general; To the explosion suppresion surface that just is mechanically damaged once in a while and the explosion suppresion surface that is not mechanically damaged, plating one deck nickel-base alloy or be coated with other anticorrosives of one deck and get final product.This process combination is applicable to that explosion suppresion surface is in the environment of mechanical damage, seriously corroded.

DFB---LSB combination: the most serious, inferior serious, the general explosion suppresion surface of mechanical damage is all adopted the DFB PROCESS FOR TREATMENT, explosion suppresion surface that just is mechanically damaged once in a while and the explosion suppresion surface that is not mechanically damaged are adopted the LSB PROCESS FOR TREATMENT.

Cold-patch weldering--each explosion suppresion surface of machine work---strengthen the explosion suppresion surface process combination: it is the same that cold welding is mended technology; Process for machining comprises the explosion suppresion surface car, mills, plane, mill, polishing etc.; Strengthening explosion suppresion surface comprises the explosion suppresion surface brush plating, is coated with 204--1 antirust oil, is coated with sufacings processing such as biological phytate, phosphatization, plating.Explosion suppresion surface to damage carries out the cold welding benefit, then each explosion suppresion surface is carried out machine work, occur in the machine work defective such as sand holes again cold welding mend machine work again, after reaching fineness, carry out antirust processing (as: being coated with 204--1 antirust oil) or with brush plating not only resizing but also antirust processing.The characteristics of this technology are that cost is low, but explosion suppresion surface hardness, corrosion resistance are relatively poor, are applicable to that price is low, and explosion suppresion surface hardness, corrosion resistance require low little flameproof enclosure.As the small machine flameproof enclosure, little dried change flameproof enclosure, threeway, four-way and other compact electric apparatus flameproof enclosures and the equipment that uses at electric substation, main haulage roadway.

The different sufacing combined methods that are worth the flameproof enclosure explosion suppresion surface of batch processing: ' LJB ' or ' RYB ' and the big flameproof enclosure explosion suppresion surface of ' LSB ' combined treatment, flameproof enclosure explosion suppresion surface during ' DFB---LSB combination ' or ' the antirust welding wire of DFB---RYB---built-up welding---anticorrosion plating is coated with process combination ' handled, ' cold-patch weldering--each explosion suppresion surface of machine work---reinforcement explosion suppresion surface process combination ' handles little flameproof enclosure explosion suppresion surface.

Wherein: ' LJB ' handles the circular face that makes things convenient for Digit Control Machine Tool to rotate, as motor shaft explosion suppresion surface or end cap explosion suppresion surface.' RYB ' handles non-circular explosion suppresion surface, as the high-voltage switch gear explosion suppresion surface.' LSB ' handles the little explosion suppresion surface on the big flameproof enclosure, as action bars axis hole explosion suppresion surface.Other is the same.

The flameproof enclosure general value height that profile is big, vice versa.Flame-proof type coal-winning machine motor, high-voltage switch gear hundreds of thousands unit, explosion suppresion surface damages just should be scrapped, and brings about great losses, and employing hardness height, the explosion suppresion surface meaning that corrosion resistance is strong are very great; Small-sized flame proof electrical equipment dozens of yuan or hundreds of unit, explosion suppresion surface reaches high rigidity, highly corrosion resistant obviously there is no need if handle with laser technology with high costs.Large, medium and small in addition flameproof enclosure service condition and process equipment also have certain difference.Therefore must reasonable combination.

The sufacing combined method at different places flameproof enclosure explosion suppresion surface is used in batch processing: according to the moist degree of mine air, contain environmental parameters such as harmful gas property, place to use (working face, crossheading, main haulage roadway, electric substation etc.), annual production (especially big, large, medium and small moulded coal ore deposit), geological conditions, determine the sufacing combined method.Sour gas such as there was dampness in the air carbonated, hydrogen sulfide are many, and then equipment is perishable, otherwise, then not perishable.Same mine, electric substation and working face service condition difference are very big.Big mine general management is regular, and the device damage degree is less relatively, and small mine is generally irregular, and the device damage degree is relatively large.Top board is low and broken, fragile equipment, otherwise, then not fragile.

As: weld--each explosion suppresion surface of machine work---strengthen the flameproof enclosure that the explosion suppresion surface process combination is handled electric substation, main haulage roadway use with cold-patch, with the flameproof enclosure of DFB---LSB combined treatment use in working face, crossheading, little colliery.Can also test into other combined method.

Ageing Treatment: adopt methods such as temper aging, oscillating aging, natrual ageing to carry out Ageing Treatment,, prevent that the flame proof gap from transfiniting to eliminate stress distortion.Figure 10 flameproof enclosure oscillating aging schematic diagram.

Explosion suppresion surface processing: after the explosion suppresion surface modification, roughness is too low, and size is also improper, needs further processing.

After processing, handle the explosion suppresion surface technological requirement at explosion suppresion surface surface plating (being coated with) one deck anticorrosion superficial layer by the sufacing combined method.

The pressure test of dispatching from the factory: by national Specification flameproof enclosure is carried out pressure test, can make dynamic pressure test or static pressure test in accordance with regulations.

Flameproof enclosure surfaces externally and internally complex technique is handled: surface brush antirust paint and anti-electric arc coat with lacquer in the enclosure, are coated with resistive connection and reveal coating, and this coating can be prevented the down-hole humid air in the inner surface dewfall, to improve insulation resistance.Priming is brushed antirust paint again in outer surface of outer cover elder generation, and spraying (or stickup) reflectorized material is made safety signs at outer surface, plays safe propaganda, education, warning function.Also can be at outer surface of outer cover High Speed Electric Arc Spraying acieral material, the surface sealing of hole that lays a coat of paint again, this coating has very strong corrosion resistance.

The flameproof enclosure assembling: each part flameproof enclosure on assembling line is assembled into integral body, as motor iron-core, rotor are assembled in the motor flameproof enclosure, builds end cap and terminal box, so that check, estimate.

Finished product inspection, evaluation: detect explosion insulation performance by GB.Detect each parts by company standard and whether reach standardization requirement (make the flameproof enclosure that dispatches from the factory again and must meet same standard).According to testing result, carry out overall merit.As check whether bolt, paint, flame proof gap, loudspeaker mouth etc. are qualified.Evaluate safety reliability, quality stability etc.

Product marking: fixing nameplate, paste the quality certificate, make hidden mark to distinguish the product of oneself.

Finished product warehouse-in: finished product warehouse-in or direct marketing in client's hand.

Beneficial effect

Phase flameproof enclosure economic life is extremely long, has invented not have great variation its 100 coming year, and the flameproof enclosure of China did not have great variation in more than 40 year, and therefore, very suitable the doing again of flameproof enclosure made.One of unexpected effect of the present invention is: the metastable flameproof enclosure of structure " is repeatedly used ", promptly " waste and old shell---make again---re-use---lost efficacy---making---re-uses again again ... repeatedly circulation ".And tradition is made or repair method can not make flameproof enclosure " be repeatedly used ", can only " disposable use ", promptly " the iron and steel raw material---make new---use---of serious failure---scrapping "." be repeatedly used " with " disposable use " and compared qualitative leap, it is very great to compare meaning in energy conservation aspect comprehensive utilization of resources.According to incompletely statistics, the whole nation has 12,000,000,000 explosion-proof devices approximately, scrap 1,200,000,000 every year, because water power, nuclear power equal energy source are to the impact of coal, the coal market does not have big development, if about about 800,000,000 yuan of annual demand explosion-proof device is all manufacturings again of waste and old flameproof enclosure, even China will not produce a traditional flameproof enclosure and can satisfy the production demand yet from now on.

The prior art that flameproof enclosure is made in the whole world all is to begin to make from raw material such as steel plates, and the present invention has overcome technology prejudice, thinking disaccustoms, break through conventional fabrication processes, waste and old flameproof enclosure is used as raw material, begins to make, effectively utilized waste and old material from waste and old flameproof enclosure, save resource, avoided smelting waste and old flameproof enclosure contaminated environment.Adopting standardization thought in the manufacture process again, the flameproof enclosure of different manufacturers process is improved, the flameproof enclosure that feasible manufacturing is again dispatched from the factory has unified standard and comes into the market, to make things convenient for the user, the flameproof enclosure under this point and the maintenance has fundamental difference (parameters such as flameproof enclosure element size under the maintenance have kept each manufactory's characteristic).

The invention solves has not had the technical barrier that solves since the invention flameproof enclosure, has broken through do not revise in 40 years former promulgated by the ministries or commissions of the Central Government " flame-proof electric equipment shell maintenance procedure) " (content is seen " technical background ") restriction.Six kinds of explosion suppresion surface defectives of this rules regulation can not be repaired, and repair method mainly is soldering or oxygen welding point soldering, mechanic, edge cover, phosphatization, and technologies such as cold welding benefits of the present invention, brush plating are used for repairing, almost can repair various defectives, will impel this rules modification.

The present invention is an innovation adopting standardization improvement, manufacture method in the manufacture process again making basic theory and key technology area again, moves towards market for manufacture a product (making flameproof enclosure especially again) again theory and technique guarantee are provided.Waste and old flameproof enclosure flower style sample, if do not carry out standardization, the product that dispatches from the factory is the same with the product of maintenance, remains the style sample, is difficult in market sale.Standardization processing method has solved this technical barrier.

Sufacing combined method of the present invention is applied to manufacture process again, also is an innovation making basic theory and key technology area again, and common composite surface engineering is to adopt several sufacings compound on same surface, to improve coating performance; And it is on same the equipment and be worth on the distinct device in batch or combination kinds of surface technology on the distinct device of place to use or on the different in batch title model device in batch, make up for each other's deficiencies and learn from each other, pursuit whole economic efficiency maximum, total cost is minimum, the systematic function optimum adapts to each demand of production environment comprehensively.This method has adopted the high-new sufacing that performance is good, cost is high at minority significant points, primary location, visual plant, has solved crucial local problem, has improved overall performance since amount to account for the total cost ratio for a short time not high; Made up ordinary skill in other major part, though amount is big, because unit cost is low, cost is not high.So total cost can be accepted, overall performance can meet the demands.Make expensive device have multi-functional flameproof enclosure of long-life, improved security reliability, prolonged useful life, reduced total cost; Making price manufacture the product that surface property satisfied the demands, had the real economy meaning again than low production (as middle P cock flameproof enclosure, middle small machine flameproof enclosure, compact electric apparatus flameproof enclosure) becomes a reality.

The flameproof enclosure production line of manufacturing again and the existing flameproof enclosure production system that form with the present invention compare, technological means advanced person, and cost is low, and " three wastes " discharging is few, the energy, resource utilization height, the factory site takies few, and personnel take few, meet industrial policy.This production line can " joint use ", both can make high-low pressure explosion-proof switch shell again, can also make flameproof enclosures such as motor, terminal box again, improves also manufacturing machine, hydraulic pressure, auto parts or the like more a little.Existing production line " line one usefulness ", as: explosion-proof switch shell production line can not be made the explosion separation motor shell.

Compare with existing flameproof enclosure technical performance with the flameproof enclosure that the present invention makes again: explosion suppresion surface hardness 〉=HRC45 is 3 times of existing explosion suppresion surface hardness approximately; Explosion suppresion surface corrosion resistance 〉=10 year, existing explosion suppresion surface corrosion resistance 2～6 months (after the phosphatization); The flameproof enclosure outer surface increases the reflection alarming effect, and inner surface increases resistive connection and reveals coating, and flameproof enclosure installs " two anti-locking devices " additional, has had to prevent to send without authorization electricity reliably, and the new function of operation that prevents to uncap without authorization makes flameproof enclosure have " multi-functional "; Because explosion suppresion surface hardness height, corrosion-resistant, security reliability improves greatly, and the probability that occurs " losing quick-fried " in the production reduces greatly, and price is not high, makes flameproof enclosure have " long-life ".The flameproof enclosure of making again with the present invention can be called " multi-functional flameproof enclosure of long-life ".

Description of drawings

Fig. 1 flameproof enclosure hydraulic test schematic diagram

Fig. 2 A type two anti-locking device schematic diagrames

Fig. 3 Type B two anti-locking device schematic diagrames

Fig. 4 C type two anti-locking device schematic diagrames

Fig. 5 switch flameproof enclosure and explosion suppresion surface schematic diagram thereof

The dual-purpose machine block diagram of Fig. 6 explosion suppresion surface plating weldering

Fig. 7 explosion suppresion surface bolt hole guard method schematic diagram

The waste and old flameproof enclosure decontamination of Fig. 8 operation block diagram

The waste and old flameproof enclosure dismounting of Fig. 9 operation block diagram

Figure 10 flameproof enclosure oscillating aging schematic diagram

Figure 11 motor flameproof enclosure and explosion suppresion surface schematic diagram thereof

In Fig. 1 flameproof enclosure hydraulic test schematic diagram, flameproof enclosure (11); Discharging valve (12); Pressure testing table return pipe (13); Adjutage (14); Filter (15); Little water pump (16); Pond (17); Manual pressure test pump (18); Check-valves (19); Unidirectional valve (1010); Pressure gauge (1011); Pressure testing table (1012); Snap joint (1013) is connected with the suction pipe of flameproof enclosure and the inside thereof; Vent valve (1014) is connected with the bleeder pipe of flameproof enclosure and the inside thereof; Clamping device (1015).

In Fig. 2 A type two anti-locking device schematic diagrames, the switch housing outside (21); Lock housing (22); Deadlock lever (23); Condom (24); Lock core (25); Key (26), A-A are the corresponding interlocking pattern schematic diagrames of key, lock core.

In Fig. 3 Type B two anti-locking device schematic diagrames, deadlock lever (23); Condom (24); Lock core (25); Switch door (31); Switch panel (32).

In Fig. 4 C type two anti-locking device schematic diagrames, condom (24); Lock core (25); Switch cover plate (41); Firm bolt (42) can be to send eletric button; Distance cover (43).

In Fig. 5 switch flameproof enclosure and the explosion suppresion surface schematic diagram thereof, switch case (51); Between hub cap and the housing, be positioned at the explosion suppresion surface (52) on the housing; Flame proof gap (53) between terminal box flange explosion suppresion surface and its cover plate explosion suppresion surface, the terminal box flange is connected with its cover plate bolt; Terminal box cover plate (54); Terminal box flange (55); Flameproof enclosure hub cap (56) is connected with double buckle between the housing; Loudspeaker mouth (57) is welded on the terminal box; Base (58), bolt is connected on the housing; Flame proof gap (59) between hub cap explosion suppresion surface and the housing explosion suppresion surface; Switch handgrip (510); Explosion suppresion surface between rotating shaft of switch handgrip and the housing (511).

In the dual-purpose machine block diagram of Fig. 6 explosion suppresion surface plating weldering, argon arc welding control and output system (61); Transformation and commutation system (62); Brush plating control and output system (63); Argon arc welding, brush plating change over switch (64).

In Fig. 7 explosion suppresion surface bolt hole guard method schematic diagram, protection bolt hole plain cushion (71); Explosion suppresion surface (72); Bolt, nut (73), (74); Screw (75); Pad (76).

In the waste and old flameproof enclosure decontamination of Fig. 8 operation block diagram, waste and old flameproof enclosure (81); Cleaning equipment (82); Wastewater treatment equipment (83).

In the waste and old flameproof enclosure dismounting of Fig. 9 operation block diagram, removable boom hoisting (91) is liftable rotation disassembly table under it; Liftable rotation disassembly table (92), (93); Some other liftable rotation disassembly tables (94); Removable categorised collection component device (95), (96) are on the disassembly table next door; Other plurality of moveable categorised collection component device (97).

Figure 10 flameproof enclosure oscillating aging schematic diagram, the flameproof enclosure of Ageing Treatment (101) is fixed on the vibration machine; Vibration frequency display instrument (102) is connected with the flameproof enclosure (101) of Ageing Treatment by gathering vibration frequency probe line; Vibration machine (103) is supported by elastic leg; Oscillator (104) is fixedlyed connected with vibration machine.

In Figure 11 motor flameproof enclosure and the explosion suppresion surface schematic diagram thereof, motor shaft (111); Electric motor end cap (112); Base (113); Electric machine casing (114); Rotor (115); Coil (116); Silicon steel sheet 117; Plane counterpart formula explosion suppresion surface (118) between junction box seat and the electric machine casing; Plane counterpart formula explosion suppresion surface (119) between connector cover and the terminal box; Terminal box (1110); Seam formula explosion suppresion surface (1111) between electric motor end cap and the electric machine casing; End cap fastening bolt (1112); Drum type brake rotates explosion suppresion surface (1113) between motor shaft and the end cap.

Embodiment:

Make the concrete mode of switch flameproof enclosure (as shown in Figure 5) again:

Waste and old flameproof enclosure decontamination: in figure (8), buy the cleaning equipment (82) of a cleaning automobile,, make a cemented platform as " black cat " cleaning machine, high low all around in the middle of the platform, waste and old flameproof enclosure (81) is placed on the platform, with cleaning machine flushing, waste water from platform flow to pond (83) (wastewater treatment equipment) sedimentation and filtration, clear water recycles, renew water after recycling several times, the old water of recovery is delivered to Sewage Disposal and is handled, and must not disorderly discharge.Often dig pond mud, clean the pond.After flameproof enclosure cleans up, dry, deliver to next procedure.Also the available pressure air washes away.With serious pollution part is cleaned with the aqueous solution.To the roasting decontamination of the available oxy-acetylene flame in serious pollution part.

Waste and old flameproof enclosure dismounting:, make disassembling system with reference to Fig. 9 principle.Electric block or purlin car are installed as removable boom hoisting (91), at it some liftable rotation disassembly tables (92) are installed down, this is made up of hydraulic jack, steel plate, and steel plate is installed in the oil cylinder top, can rotate.Make some dollies easy to loading and unloading or belt conveyer as removable categorised collection component device (95).During dismounting, the spray loosening agent is hung in and splits into part on the disassembly table earlier, and identical parts is put together, and the removable categorised collection component device of packing into is delivered to next procedure.

Detect classification:

According to variety of components, make corresponding monitor station, prepare corresponding standarized component, the parts of dismounting are placed on monitor station, with the standarized component contrast, use gage measuring, according to " detecting classification " operation prescriptive procedure classification of " summary of the invention ", and perform record.As: the standard binding post of preparation QC83-80Z switch, button, button copper sheathing, loudspeaker mouth, earth stud, switch handgrip, basic shell (remainder behind the detachable part of dismounting flameproof enclosure) etc. are as standarized component, the binding post of dismounting and standard binding post are compared, whether the observation outward appearance conformance with standard, the basic shell of dismounting and the basic shell of standard are compared, observe whether conformance with standard of binding post hole explosion suppresion surface, flange thickness and other position, Here it is method of direct observation.

With the thickness of vernier caliper or ruler measurement terminal box flange (55), terminal box cover plate (54) and other flanges, the aperture of explosion suppresion surface between rotating shaft of measuring switch handgrip and the housing (511) and handgrip rotating shaft external diameter etc. perform record, gage measuring method that Here it is.

Whether detect flameproof enclosure with the hydraulic pressure test method(s) leaks gas, make water test unit by Fig. 1, simultaneously three above flameproof enclosures (11) are hung in pressure testing table (1012) with electric block, connect snap joint (1013), vent valve (1014) and other pipeline, start little water pump (16), give flameproof enclosure (11) water filling, till vent valve (1014) flows out water.Suppress with manual pressure test pump (18), see Pressure gauge (1011), till setting.Whether leak by the rules observation, perform record, mark at leakage point or deformation point, with convenient for maintaining.Open discharging valve (12) pond (17) that discharges water then, test next by said procedure.The water that flows to pressure testing table is recovered to pond (17) by pressure testing table return pipe (13).

With the parts means of transportation of packing into of putting into different categories, need manufacturing again parts to deliver to next procedure by " the flameproof enclosure classification facture " of " detect classification " operation.

Flameproof enclosure is cleared up old lacquer: adopt abrasive blasting depainting method; switch flameproof enclosure and explosion suppresion surface schematic diagram thereof are as shown in Figure 5; earlier special rubber is blocked up and be screwed in the holes such as flange screw, loudspeaker mouth screw, handgrip axis hole; protect the explosion suppresion surface that needs protection with rubber slab again, use sand-blasting machine then to the paint removal of flameproof enclosure surface sand-blasting.

Standardized method improves flameproof enclosure: prepare convenient lathe, milling and drilling machine, electric oxygen welding equipment and other repair outfit of repairing, install concentratedly in repair workshop, improve with convenient.Improve one's methods and be: the hydraulic test is found weld seam, the sand holes of the housing leak, electric welding is repaired; To the skimble-scamble flameproof enclosure of loudspeaker mouth size, cut off old loudspeaker mouth with oxy-acetylene flame, the loudspeaker mouth of the unified size of standard in the welding; To the skimble-scamble flameproof enclosure of base size, the bolt hole size of firm banking on the change flameproof enclosure, the production standard base has arrived " flameproof enclosure assembling " operation installation code base again; The skimble-scamble flameproof enclosure of pairs of posts hole dimension enlarges aperture with drilling machine, is improved to the unified standard aperture; If the indivedual screws of terminal box flange damage, should cut off whole flange with oxy-acetylene flame, renew.All old law orchids can also be cut off, change the new flange made from the explosive welding (EW) method.See Fig. 2 A type two anti-locking device schematic diagrames, old locking device is cut off from the switch housing outside (21) with oxy-acetylene flame, lock housing (22) is twisted deadlock lever (23), connect condom (24), be welded on together on the switch housing outside (21), lock core (25), key (26) are equipped with according to customer requirements.The flameproof enclosure that improvement is reached standard is delivered to next procedure.

The sufacing combined method is handled explosion suppresion surface: as shown in Figure 5; with " the antirust welding wire of JB---DFB---built-up welding---LSB process combination " is the explosion suppresion surface modification; at the explosion suppresion surface of terminal box flange (55) suitable high rigidity Ni-based or cobalt-based or other alloy powder of laser surfacing one layer thickness; before the surfacing; protect the explosion suppresion surface screw earlier; method is shown in Fig. 7 explosion suppresion surface bolt hole guard method schematic diagram; be coated with the high temperature resistant butter of one deck on every side at screw (75); cut off the oxidation path, prevent the high-temperature oxydation screw thread.Stainless steel plain cushion (71) is placed on the screw, wears bolt (73), nutting (74) clamps stainless steel plain cushion (71), and stainless steel plain cushion (71) is welded on the explosion suppresion surface (72) from pad (76).Screw protection operation is finished.Then by laser surfacing requirement surfacing.

In Fig. 5, with the explosion suppresion surface of argon shield electrode holder high-hardness stainless steel welding wire built-up welding in hub cap (56), built-up welding thickness is more than or equal to 2mm, etc. after Ageing Treatment, the machine work again the brush plating nickel-base alloy or be coated with biological phytate, 204--1 antirust oil improves antiseptic property; The stainless steel welding stick built-up welding general with argon shield electrode holder hardness, that corrosion resistance is strong is in explosion suppresion surface (52), and built-up welding thickness is more than or equal to 2mm, and after the Ageing Treatment, machine work reaches requirement;

GM--3450 repair of moulds machine is repaired scar on terminal box cover plate (54) explosion suppresion surface as explosion suppresion surface cold-patch welding machine.But speed is too slow, should strengthen GM--3450 storage capacitor capacity and withstand voltage, and its improvement of Xingqi of going forward side by side manufactures quick-fried cold-patch welding machine, with raising speed.After grinding reaches the regulation roughness, the anticorrosion of brush plating one deck nickel-base alloy.With explosion suppresion surface (511) between handgrip rotating shaft of Way by Brush Plating Technique restoration switch and the housing, reach resizing and anticorrosion purpose.

Also can mend but also brush plating with the dual-purpose machine of explosion suppresion surface plating weldering not only cold welding, make by (Fig. 6), with common argon arc welding control and output system, transformation and commutation system, brush plating control and output system as (61), (62), (63), with common change-over switches as argon arc welding, brush plating change over switch (64), combine redesign, debugging, improve, can use, cold welding added time conversion (64) is a position, at this moment can not brush plating, when wanting brush plating, conversion (64) at this moment can not be mended by cold welding in another position.Other cold welding is mended, brush-plating technique is the same.

Flameproof enclosure after the explosion suppresion surface modification is delivered to next procedure.

Ageing Treatment: Figure 10 flameproof enclosure oscillating aging schematic diagram.The flameproof enclosure of Ageing Treatment (101), be fixed on vibration machine (103), Vibration on Start-up device (104) is regulated vibration frequency, see vibration frequency display instrument (102), when reaching natural frequency, strong resonance takes place in flameproof enclosure, vibration a period of time can eliminate stress, and reaches the Ageing Treatment purpose.

When the production time is urgent greatly again in batches, can make a tempering furnace with temperature adjustment, constant temperature function, a collection of flameproof enclosure after the sufacing combined method is handled pushes the tempering furnace tempering, carries out Ageing Treatment.This stove can also be used by double as drying machine drying equipment in the flameproof enclosure assembly process.

When big in batches and production task is not urgent, a collection of flameproof enclosure after the processing of sufacing combined method is placed on place a period of time, carries out natural aging treatment.

Deliver to next procedure.

Explosion suppresion surface processing: select process equipments such as suitable vertical lathe, universal milling machine, engine lathe, grinding machine according to the workpiece size, process tool cubic boron nitride, pottery or other carbide chips.According to flameproof enclosure shape fabrication and processing mold,, can greatly improve working (machining) efficiency pack into mold processing of flameproof enclosure to be processed.Also can scream an obscenity to process with electric smelting reaches fineness 2～3, uses machine tool fine finishining again.

The pressure test of dispatching from the factory: it is shown in Figure 1 to press flameproof enclosure hydraulic test schematic diagram, carries out the hydraulic test according to rules, and emphasis is noted the flameproof enclosure of pinpointing the problems in " detecting classification " process.Also can carry out other pressure test by GB.

Flameproof enclosure surfaces externally and internally complex technique is handled: be coated with one deck antirust paint earlier at the flameproof enclosure surfaces externally and internally that processes, after the drying, be coated with the anti-electric arc lacquer of one deck earlier at inner surface, be coated with one deck resistive connection again and reveal coating.Reflecting safety alarming device signs such as " inaccurate charged mobile device " of making stick on outer surface or outside external coating indicate equally.

Flameproof enclosure assembling: make an assembling line with belt, all accessories of flameproof enclosure are prepared the streamline both sides, by the rules assembling.

Finished product inspection, evaluation: by full-time inspection personnel, the tool using instrument is checked item by item, is estimated according to standard, and it is qualified to judge whether, carries out record.

Product marking: by the standard fixed nameplate, paste the quality certificate, make hidden mark to distinguish the product of oneself.

Finished product warehouse-in: in accordance with regulations finished product warehouse-in or direct marketing in client's hand.

Make the concrete mode of motor flameproof enclosure (as shown in figure 11) again:

Waste and old flameproof enclosure decontamination:

With the concrete decontamination mode of switch flameproof enclosure.But note washing away with bellows or air compressor machine compressed air when being difficult to avoid not with coil and binding post contact water.

Waste and old flameproof enclosure dismounting:

Dismantling mode main difference point with the switch flameproof enclosure is the dismounting coil, and earlier to the coil electricity heating, but temperature can not be too high, in order to avoid burn out iron core, treats the coil deliquescing, and it is extracted out.Other is similar, slightly.

Detect classification:

The main difference point that detects the concrete mode of classification with the switch flameproof enclosure is the hydraulic test, switch flameproof enclosure (11) among Fig. 1 is replaced by electric machine casing (114) among Figure 11, making the special-purpose end cap of two hydraulic tests covers at the electric machine casing two ends, clamp with clamping device, connect the water route as stated above, carry out the hydraulic test.Other is similar substantially, slightly.

Flameproof enclosure is cleared up old lacquer:

Cover electric motor end cap, block bolt hole, axis hole, seal explosion suppresion surface and flame proof gap with special rubber strip, plate with special rubber.Use sand-blasting machine to the paint removal of flameproof enclosure surface sand-blasting then.Also can be with the clear depainting of organic solvent, buck depainting or high temperature depainting.

Standardized method improves flameproof enclosure:

The main difference point that improves the concrete mode of switch flameproof enclosure with standardized method is the improvement of iron core, rotor and bearing, to burning out or loosening iron core will disassemble and more renews, the silicon steel sheet that the core ends minority is damaged is wanted place under repair., spindle nose incliner badly damaged to rotor mouse bar fracture, iron core will change, to the place under repair of rotor silicon steel sheet local damage.General whole to be replaced with the identical trade mark new to bearing, notes the fit clearance between bearing and end cap and the motor shaft during replacing, replacing again after the processing of transfiniting in the gap.Other is similar substantially, slightly.

The sufacing combined method is handled explosion suppresion surface:

See figure (11), the motor flameproof enclosure generally is cast steel or cast iron manufacturing, so adopt LJB---the LSB process combination is handled explosion suppresion surface, elder generation's cold welding is mended explosion suppresion surface (118), (119), (1111), (1113) and other explosion suppresion surface, partly reaches the fineness requirement, respectively electric machine casing, end cap, terminal box are fixed on the laser treatment workbench, plane counterpart explosion suppresion surface and seam explosion suppresion surface are carried out surface hardening raising hardness with laser.Arrived " explosion suppresion surface processing " operation, polishing reaches regulation fineness, is coated with biological phytic acid anticorrosion.

Active cylinder explosion suppresion surface brush plating one deck nickel tungsten between motor shaft and the end cap reaches resizing and anticorrosion purpose.

For the small machine flameproof enclosure, little dried change flameproof enclosure, threeway, four-way and other compact electric apparatus flameproof enclosures, because price is lower, can adopt cold-patch weldering--each explosion suppresion surface of machine work---reinforcement explosion suppresion surface process combination, method is: first cold welding is mended each explosion suppresion surface, and each explosion suppresion surface of machine work is found sand holes then, cold welding is mended again, machine work again until reaching regulation fineness, is measured the flame proof gap, aperture and flange thickness, size is non-compliant, the brush plating resizing is also anticorrosion, the size conforms standard, be coated with 204--1 antirust oil, phosphatization or anticorrosion with additive method.

Ageing Treatment:

Processing motor explosion suppresion surface temperature is lower, and stress deformation is little, deposits a period of time and can use, and when task is urgent, beats several times in the flameproof enclosure outside near the explosion suppresion surface position with tup and can use, can not be firmly excessive when beaing, in order to avoid damage shell.

Explosion suppresion surface processing:

Make explosion separation motor processing mold, polishing or reach regulation fineness with other machine-tooled method.

The pressure test of dispatching from the factory:

Similar to the specific requirement of switch flameproof enclosure, slightly.

Flameproof enclosure surfaces externally and internally complex technique is handled:

Similar to the specific requirement of switch flameproof enclosure, slightly.

The flameproof enclosure assembling:

If changed iron core iron core is installed at first, coil, bearing and other element are installed again.

Finished product inspection, evaluation:

Similar to the specific requirement of switch flameproof enclosure, slightly.Detect content of the test and carry out relevant rules.

Product marking:

Similar to the specific requirement of switch flameproof enclosure, slightly.

Claims (9)

1. make the flameproof enclosure method again for one kind, comprise that its operation combination is waste and old flameproof enclosure decontamination successively, waste and old flameproof enclosure dismounting detects classification, and flameproof enclosure is cleared up old lacquer, handle explosion suppresion surface, Ageing Treatment, explosion suppresion surface processing, the pressure test of dispatching from the factory, the technical finesse of flameproof enclosure surfaces externally and internally, flameproof enclosure assembling, product inspection, evaluation, product marking, the finished product warehouse-in; It is characterized in that:

Described method is to improve flameproof enclosure with standardized method, and takes to comprise the method for following sufacing combination at the flameproof enclosure flameproof joint;

The sufacing combined method of handling several explosion suppresion surfaces contains, laser explosion suppresion surface modified technique JB, cold welding is mended--LASER HEAT TREATMENT--and is coated with biological phytic acid explosion suppresion surface modification combination process LJB, thermal spraying-argon arc welding explosion suppresion surface modification combination process RYB, built-up welding-surface anticorrosion is handled explosion suppresion surface modification combination process DFB, explosive welding (EW) explosion suppresion surface modified technique BB, cold-patch weldering-brush plating explosion suppresion surface modification combination process LSB;

The sufacing combined method of handling same flameproof enclosure explosion suppresion surface contains, the antirust welding wire of JB--DFB--built-up welding--LSB process combination, the antirust welding wire of DFB---RYB---built-up welding---anticorrosion plating is coated with process combination, the DFB---LSB combination, the explosion suppresion surface process combination is strengthened in cold-patch weldering--each explosion suppresion surface of machine work--;

The different sufacing combined methods that are worth the flameproof enclosure explosion suppresion surface of batch processing also contain, LJB or RYB and LSB combination, DFB--LSB makes up or the antirust welding wire of DFB--RYB--built-up welding--anticorrosion plating is coated with process combination, and the explosion suppresion surface process combination is strengthened in cold-patch weldering--each explosion suppresion surface of machine work--; And the sufacing combination at different places flameproof enclosure explosion suppresion surface is used in the batch processing that contains cold-patch weldering--each explosion suppresion surface of machine work--reinforcement explosion suppresion surface process combination, DFB---LSB combination.

2. a kind of flameproof enclosure method of making again according to claim 1, it is characterized in that: described waste and old flameproof enclosure decontamination operation comprises that water, the aqueous solution or compressed air wash away waste and old flameproof enclosure or bakes waste and old flameproof enclosure decontamination with flame, after water, the aqueous solution washed away, waste water was treated recycling.

3. a kind of flameproof enclosure method of making again according to claim 1 is characterized in that: described waste and old flameproof enclosure dismounting operation is included in the system that removable boom hoisting (91), liftable rotation disassembly table (92), removable categorised collection component device (95) form and dismantles.

4. a kind of flameproof enclosure method of making again according to claim 1, it is characterized in that: described detection classification operation comprises direct observational method, measurer instrument measurement method, hydraulic test method or online automatic detection method and flameproof enclosure the combining of facture of classifying, and comprises manual pressure test pump (18), little water pump (16), pressure testing table (1012), pressure testing table return pipe (13), adjutage (14) in the flameproof enclosure hydraulic test system.

5. a kind of flameproof enclosure method of making again according to claim 1 is characterized in that: described flameproof enclosure is cleared up old lacquerer's preface and is comprised abrasive blasting depainting, the clear depainting of organic solvent, buck depainting or high temperature depainting.

6. a kind of flameproof enclosure method of making again according to claim 1, it is characterized in that: described standardized method improves the flameproof enclosure operation and comprises and improve loudspeaker mouth, terminal box, connector cover, binding post, isolating switch handgrip, binding post hole, bolt, base, iron core, housing, rotor or bearing, or to improve old locking device be two anti-locking devices.

7. a kind of flameproof enclosure method of making again according to claim 1, it is characterized in that: in the described sufacing combined method, when built-up welding needs protection bolt hole, around the explosion suppresion surface bolt hole, be coated with one deck high temperature-resistant grease, on explosion suppresion surface, put a stainless steel plain cushion that the aperture is smaller or identical, from bolt hole, wear a bolts facing to bolt hole, tightening nuts, plain cushion is fixed on the explosion suppresion surface, along the welding of plain cushion outer, it is welded on the explosion suppresion surface during built-up welding; Need the cold welding added time, make explosion suppresion surface plating dual-purpose machine of weldering or explosion suppresion surface cold-patch welding machine, carry out cold welding and mend.

8. a kind of flameproof enclosure method of making again according to claim 1 is characterized in that: described ageing treatment process adopts temper aging, flameproof enclosure oscillating aging or natrual ageing to handle.

9. a kind of flameproof enclosure method of making again according to claim 1, it is characterized in that: described flameproof enclosure surfaces externally and internally complex technique treatment process is included in application of flameproof enclosure outer surface or stickup " inaccurate charged mobile device " reflecting safety alarming device sign operation, or is coated with resistive connection dew coating at the flameproof enclosure inner surface.

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