CN105269260A - Abrasion-resistant and anticorrosion processing method for combination valve of petroleum industry and combination valve - Google Patents
Abrasion-resistant and anticorrosion processing method for combination valve of petroleum industry and combination valve Download PDFInfo
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- CN105269260A CN105269260A CN201510769474.7A CN201510769474A CN105269260A CN 105269260 A CN105269260 A CN 105269260A CN 201510769474 A CN201510769474 A CN 201510769474A CN 105269260 A CN105269260 A CN 105269260A
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- combination valve
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- abrasion
- laser cladding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/001—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass valves or valve housings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
Abstract
The invention provides an abrasion-resistant and anticorrosion processing method for a combination valve of the petroleum industry and the combination valve. The method comprises the following steps that firstly, the surfaces of the combination valve are cleaned; secondly, argon arc welding is adopted for mending to ensure that enough working allowance is reserved on the surfaces of the combination valve; thirdly, machining is conducted, working allowance is reserved on the upper end face and the lower end face of the combination valve, and the other surfaces are machined according to the standard size of a new part and the tolerance; fourthly, the combination valve is installed, the cladded face is cleaned, and a laser cladding device is debugged at the same time; fifthly, cladding powder is added to the laser cladding device, after the cladding powder is evenly and steadily sent out through a powder feeding inlet, a laser operation procedure is started to conduct laser cladding treatment on the upper end face and the lower end face of the combination valve; and sixthly, the final size inspection of the combination valve is conducted. According to the abrasion-resistant and anticorrosion processing method for the combination valve of the petroleum industry and the combination valve, an innovative technique of the argon arc welding, the laser cladding and the machining is adopted, and the surface hardness of the treated combination valve is up to 58HRC, so that the abrasion-resistant and anticorrosion properties are higher, and the market prospect is broad.
Description
Technical field
The present invention relates to anticorrosion antiwear treatment technology, relate to a kind of abrasion-proof corrosion-proof processing method of petroleum industry combination valve and described combination valve more specifically, particularly relate to a kind of combination valve abrasion-proof corrosion-proof processing method of laser surface modification.
Background technology
Because oil major part is contained in hole rock, need to exploit under the environment of high pressure, high temperature.The general water injection well handed over producing well center monoclinic phase on the limit of producing well, increasing the pressure in rich oil district, making it more easily be exploited by injecting liquid.Water injection well injects highly pressurised liquid by reciprocating plunger pump in well, thus increases the pressure in rich oil district.The process injected, subjects a large amount of liquid and washes away in plunger displacement pump.Higher sulfide, hydride and chloride is there is in the environment of oil region.Generally, the material that oil equipment adopts is carbon steel material, and the hardness of this type of material is lower, and flushing resistance is poor, and corrosion failure problem is very serious.Combination valve is the core component of reciprocating plunger pump, has important effect to the flow velocity and pressure controlling liquid in plunger displacement pump.If combination valve washes away seriously, safety valve action in oil gear can be caused unstable, and noise is large, and pump start impacts large, the serious problems such as breakthrough is many, and sealing is poor, and conveyance capacity is little.
In current solution oil equipment, the Main Means of combination valve wear problem is solved by following two kinds of modes: (1) brushes resistance to erosion coating; (2) the overall high-hardness that adopts manufactures.But all there is self significantly deficiency in actual use in these two kinds of technology: when using resistance to erosion paint brush to be coated in combination valve surface, fluid scouring can not be stood for a long time, and can not the problem also easily occurring delamination be used in high temperature environments, if wash away after exposing metal level, the corrosion to combination valve can be accelerated because of there is potential difference between anticorrosive paint and metal; High-hardness such as the martensite stainless steel material adopting high cost is raw material, various parts needed for manufacture, although certain halophile can be played, the corrosiveness of hydride, but alleviate muriatic corrosion in confused situation aobvious, and use the martensitic stain less steel of high cost due to entirety, the cost of single part will improve 1-1.5 times, add the cost of oil recovery greatly, and the combination valve life-span does not bring up to Production requirement.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency of the prior art, the proposition of innovation is a kind of specially for the erosion of the surface corrosion-resistant based on the laser melting and coating technique Wear-resistant Treatment technology of petroleum industry combination valve, solving combination valve can not at high temperature, high pressure, the problem of long-term work under high corrosive environment, by the case hardness >=58HRC of the combination valve after technical finesse of the present invention, laser melting coating layer thickness >=0.5mm, yield rate >=95%, abrasion-proof corrosion-proof is higher, and treatment effeciency is high, cost is low, described technology can be used for the completing the term of service, the reparation of impaired serious combinaing valve body, also can be used for the lifting of new product performance, wide market.
It is as follows that the present invention solves the problems of the technologies described above taked technical scheme:
An abrasion-proof corrosion-proof processing method for petroleum industry combination valve, is characterized in that, comprise the following steps:
(1), removing surface is carried out to combination valve;
(2), by the combination valve surface after cleaning adopt argon arc welding to repair, in mending course, ensure that enough allowance is left on combination valve surface;
(3) combination valve after, repairing step (2) carries out machining, make it on original size basis, reduce more than 0.5mm to the machining of combination valve upper and lower end face, the machining on other surfaces beyond combination valve upper and lower end face is performed with reference to new part standard size and tolerance;
(4), use frock by step (3) process after combination valve install after, the upper and lower end face of combination valve is cleared up, and has debugged laser cladding device;
(5), to laser cladding device add the coating power that granularity is 45 ~ 180 μm, the mass percent of described coating power consists of: P≤0.007%, S≤0.005%, Ni:1.25%-3.50%, Cr:15%-18%, Fe surplus;
(6), open the powder feeding switch of laser cladding device, check powder, whether gas is unobstructed, until powder feeding mouth is uniform and stable send coating power after open laser working procedure, laser cladding process is carried out to the upper and lower end face of combination valve, thus it is extremely low to form dilution factor on the upper and lower end face of combination valve, with the thickness of the matrix metallurgical binding laser cladding face coat at more than 0.5mm, in laser cladding processing procedure, control laser cladding direction is the unidirectional deposition being parallel to combination valve end face direction, laser cladding powder feed rate is 3-8g/min, LASER HEATING power is 1800-2200W, laser head is 4-6mm/s in the portable cord speed on surface to be deposited, deposition overlapping rate is 30% ~ 50%,
(7) carry out dimension control to the combination valve after laser cladding process, guaranteeing to leave the further machining processes of the laggard row of enough allowance, is standard size by combination valve dimensioned.
Further according to the abrasion-proof corrosion-proof processing method of petroleum industry combination valve of the present invention, wherein step (1) specifically comprises: use wire brush, polished silicon wafer or bistrique to remove rusty stain, the dregs of fat impurity on the pending surface of combination valve, and etch pit is cleared up, after cleaning, combination valve surface is metallic luster.
Further according to the abrasion-proof corrosion-proof processing method of petroleum industry combination valve of the present invention, wherein in step (2), the wlding that argon arc welding adopts is the welding wire of diameter 2.0mm, in welding wire, the mass percent of each element consists of: C≤0.03%, Si≤0.6%, Mn, 0.25%-1.00%, Cr:23%-25%, Ni:12%-14%, Fe surplus, when argon arc welding is repaired, electric current is 65 ~ 80A, voltage is 12 ~ 15V, in mending course controls the reinforcement in REPAIR WELDING region at 2-5mm.
Further according to the abrasion-proof corrosion-proof processing method of petroleum industry combination valve of the present invention, wherein in step (3), carry out the size that the machining on other surfaces beyond combination valve upper and lower end face does not carry out repair by welding with reference to this surface, other surfaces after ensureing machining beyond combination valve upper and lower end face have unified size.
Further according to the abrasion-proof corrosion-proof processing method of petroleum industry combination valve of the present invention, wherein step (4) specifically comprises: use three to grab chuck by fastening for combination valve end, expose upper surface and the lower surface of combination valve, and clear up upper and lower end face with acetone soln, then combination valve is steadily placed on work top, adjusting the laser head of laser cladding device and the distance of end face, the dry running by setup program when not opening the light, confirming the errorless rear zero of program.
Further according to the abrasion-proof corrosion-proof processing method of petroleum industry combination valve of the present invention, the case hardness of the combination valve wherein after described abrasion-proof corrosion-proof disposal methods is at more than 58HRC.
A kind of petroleum industry combination valve, described combination valve is carry out the combination valve after surface modification treatment through abrasion-proof corrosion-proof processing method of the present invention.
At least following technique effect can be reached by technical scheme of the present invention:
1), scheme of the present invention is not only applicable to old combination valve reparation, is equally suitable for and the surface modification to Combination nova valve yet, can be applicable to the anticorrosion antiwear process of other oil equipments except combination valve, wide market simultaneously yet;
2), scheme of the present invention prepare combination valve abrasion resistance surface, compared with traditional technique, there is higher surface abrasion resistance, its case hardness >=58HRC, can repair any position of combination valve outer surface, repair layer and basic unit are metallurgical binding, and the tensile strength of bond strength and material is suitable, repair layer thickness is 0.5mm, can increase substantially the anti-wear performance that the rear part of process is surperficial in adverse circumstances under oil working face;
3), scheme of the present invention have employed most advanced process for treating surface, has higher surface corrosion resistance relative to traditional handicraft, can increase substantially the decay resistance on surface in adverse circumstances under oil working face of part after process;
4), scheme of the present invention is before combination valve part carries out laser cladding, first for combination valve part entirety is carried out falling size process, on the size basis ensureing part after deposition, the heat affected area that performance in deposition is least stable is avoided, the most stable welded seam area of performance is left on surface, not only ensure that the dimensional accuracy of part, equipment precision, more ensure that operation stability and the reliability of equipment;
5) surface, in scheme of the present invention and matrix are metallurgical binding, and bond strength is high, therefore can stand fluid scouring for a long time, still keep the integrality on surface under hot environment;
6), scheme of the present invention completely avoid the problem of environmental pollution that traditional organic coating technology is brought, and has the good feature of environmental protection;
7) the antiscour combination valve that, scheme of the present invention is relatively traditional has higher stability and surface corrosion resistance energy with the mode of brushing antiscour organic coating, compared with stainless steel combination valve, the present invention adopts ordinary carbon steel material combination valve to be matrix, there is better technique applicability, and significantly improving piece surface performance (as hardness, anti-wear performance) take into account good economic serviceability under prerequisite, in the process of combination valve piece surface wear resistant corrosion resistant, there is wide marketing prospect.
Accompanying drawing explanation
Accompanying drawing 1 is the principle schematic of by the method for the invention, petroleum industry combination valve being carried out to abrasion-proof corrosion-proof process.
In figure, the implication of each Reference numeral is as follows:
1-laser engine arm, 2-scroll chuck, 3-combination valve upper surface, 4-combination valve, 5-combination valve lower surface, 6-scroll chuck.
Detailed description of the invention
Below technical scheme of the present invention is described in detail, to enable those skilled in the art understanding the present invention clearly, but does not therefore limit the scope of the invention.
The method of the invention carries out abrasion-proof corrosion-proof intensive treatment for the wearing and tearing of petroleum industry combination valve specially, through long-term innovation test and the abrasion analysis of applicant, find that petroleum industry combination valve mostly is carbon steel material and makes, at residing regional environment medium sulphide content, the corrosion of hydride and chloride etc. and under washing away, in conjunction with the use working method of combination valve, find that the abrasion and corrosion intensity that combination valve entirety is subject to also exists larger difference, show to there is more serious abrasion and corrosion relative to other in the upper and lower end face of combination valve, the present invention is based on this wound newfound difference erosion corrosion proposition one can with low cost, high efficiency combination valve surface abrasion resistance corrosion resistant processing method, comprise the following steps:
(1), use the instruments such as wire brush, polished silicon wafer, bistrique to remove the impurity such as rusty stain, the dregs of fat on the pending surface of combination valve, guarantee that rust staining is removed completely, have etch pit should being cleaned out completely of etch pit, surface is metallic luster;
(2) the surface argon arc welding of the combination valve, by step (1) processed is repaired, and ensures that enough allowance is left on combination valve surface, ensure that combination valve can process completely in mending course.The wlding that concrete described argon arc welding adopts is selected: diameter is the welding wire of 2.0mm, as the ER309L welding wire of 2.0mm, in welding wire the mass fraction of each element composed as follows shown in: C≤0.03%, Si≤0.6%, Mn, 0.25%-1.00%, Cr:23%-25%, Ni:12%-14%, Fe surplus, welding condition is electric current 65 ~ 80A, voltage 12 ~ 15V; The allowance that combination valve surface is left is that the reinforcement (life size basis increasing height) in REPAIR WELDING region controls at 2-5mm;
(3), the combination valve of step (2) after argon arc welding process is carried out machining, machine adds process to carry out mainly for argon arc welding mend, except combination valve upper and lower end face, other surfaces perform with reference to new part size and tolerance, make the consistent size adding combination valve skin patching place and non-mend after process through machine.To be added by machine the upper and lower end face of combination valve simultaneously and reserve allowance, described allowance is that more than 0.5mm is reduced respectively in upper and lower end face on life size basis, leaves processing dimension to the process of post laser deposition;
(4), appropriate special powder is put in powder feeding bucket, combination valve after using frock step (3) to be processed installs, as shown in Figure 1, it is tight that combination valve 4 is grabbed chuck 2 and 6 clip by three, expose upper surface 3 and the lower surface 5 of combination valve, check that whether clamping is firm, the upper and lower end face of cladding is treated in the complete rear acetone cleaning of clamping, the granularity of described special powder is 45 ~ 180 μm, specifically consist of (the mass percent composition of each element): P≤0.007%, S≤0.005%, Ni:1.25%-3.50%, Cr:15%-18%, Fe surplus; Described powder is the professional laser coating material that the present invention initiates;
(5), combination valve is clamping after, be placed on stably on work top, then adjust the distance of laser head 1 and surface of the work, the dry running program when not opening the light, confirms that program is errorless;
(6), program dry running errorless after, zero.Open powder feeding switch, check that whether powder, gas is unobstructed.Until powder feeding mouth uniform and stable send metal dust after open laser working procedure, laser cladding process is carried out to the upper and lower end face of combination valve, laser melting coating refers to and is made it to melt with matrix surface skim through laser irradiation by coating material cladding matrix surface placed by selecting with different adding material modes simultaneously, and it is extremely low to form dilution factor after rapid solidification, the face coat of metallurgical binding is become with matrix, significantly improve the wear-resisting of substrate surface, anti-corrosion, heat-resisting, the process of anti-oxidant and electrical characteristic, thus reach the object of surface modification or reparation, both the requirement to material surface particular characteristic had been met, again save a large amount of noble elements.The present invention adopts the upper and lower end face of laser cladding technology to combination valve to process, using above-mentioned special powder as coating material, and it is extremely low to make it to melt with combination valve upper and lower end face layer material also rapid solidification formation dilution factor through laser irradiation simultaneously, the face coat of metallurgical binding is become with matrix, control laser cladding direction for being parallel to combination valve end face direction, and unidirectional cladding, as shown in Figure 1, the state modulator of laser cladding process is as follows: laser cladding powder feed rate 3-8g/min, LASER HEATING power 1800-2200W, laser head 1 is treating the portable cord speed 4-6mm/s on cladding surface, in welding process, per pass deposition is 30% ~ 50% containing the Duplication between road and overlapping rate.The thickness of laser cladding is about combination valve end face machine and adds allowance reserved in process and be namely about 0.5mm.
(7), to the combination valve after laser melting coating carry out dimension control, if occur, local is not enough, can continue to adopt laser melting coating to repair.Deliver next step after guaranteeing to leave enough allowance to carry out machine and add process, machine adds in process, should protect non-machine and add face, prevents from occurring colliding with in carrying process, and machine ensures that combination valve overall dimensions is consistent with standard size after adding process.
More than 58HRC is reached by its case hardness of the combination valve after the method for the invention process, abrasion-proof corrosion-proof performance is higher than traditional treatment method, the handling property that table 1 specifically provides the method for the invention and conventional method contrasts, the combination valve corrosion resistance after visible the method for the invention process and anti-wear performance stronger.The method adopting argon arc welding to process in conjunction with mechanical grinding for the surface portion beyond the end face of combination valve in above-mentioned embodiment carries out intensive treatment, end face for combination valve adopts argon arc welding, the method that laser cladding is processed in conjunction with mechanical grinding carries out intensive treatment, can with high efficiency, the mode of low cost obtains and manufactures the performance of combination valve again, meet the instructions for use of petroleum industry combination valve completely, improve its working strength, described laser cladding technology also can be applied to the position of other serious wear except combination valve end face by same those skilled in the art, in conjunction with argon arc welding, laser cladding and mechanical processing technique process any position of combination valve, these all belong to protection category of the present invention.
The comparative illustration of table 1 kinds of processes
| Technique | Cost | Corrosion resistance | Wearability | Combination |
| The present invention | Low | Good | Good | Metallurgical binding |
| Anti-corrosive paints | Low | Difference | Difference | Physical bond |
| Stainless steel | Higher | Generally | Generally | - |
Below provide the specific embodiment of the method for the invention.
embodiment 1
The surface peening preferred process method being applicable to combination valve of the present invention specifically comprises the following steps:
(1) use the instruments such as wire brush, polished silicon wafer, bistrique to remove and treat the surface modification combination valve surface impurity such as rusty stain, the dregs of fat, guarantee that rust staining is removed completely, have etch pit should being cleaned out completely of etch pit, surface is metallic luster;
(2) combination valve surface argon arc welding step (1) processed is repaired, and ensures to leave enough allowance in mending course, ensures that combination valve can process completely, welding wire adopts diameter to be the welding wire of 2.0mm, and wherein the mass fraction of each element is as follows: carbon≤0.03%, Si≤0.6%, Mn, 0.25%-1.00%, Cr:23%-25%, Ni:12%-14%, Fe surplus, welding condition is electric current 65A, voltage 12V, and REPAIR WELDING place surplus is that former accessory size basis increases 2mm;
(3) combination valve that step (2) processes is carried out machining to argon arc welding mend, wherein to the machining needs of the mend beyond upper and lower end face: machine adds the size after process with reference to new part size or be consistent with the correspondingly-sized of non-mend, machine is carried out to upper and lower end face and adds requirement: 0.5mm is reduced respectively in upper and lower end face on life size basis, leave processing dimension to post laser deposition;
(4) be that 46 μm of powder are put in powder feeding buckets by suitable for composition, granularity, the combination valve after using frock step (3) to be processed installs, and checks that whether clamping is firm, and the complete rear acetone of clamping clears up clad can fusion.In powder, the mass fraction of each element is as follows: P≤0.007%, S≤0.005%, Ni:1.25%-3.50%, Cr:15%-18%, Fe surplus;
(5) after combination valve is clamping, be placed on stably on work top, adjust the distance of laser head and workpiece, the dry running program when not opening the light, confirm that program is errorless;
(6) the program dry running of step (5) errorless after, zero, opens powder feeding switch, checks that whether powder, gas unobstructed.Until powder feeding mouth uniform and stable send metal dust after to open the light working procedure.Laser cladding carries out for the upper and lower end face of the combination valve after above-mentioned process, control laser cladding direction for being parallel to combination valve end face direction, and unidirectional cladding, as shown in Figure 1, the state modulator of laser cladding process is as follows: laser cladding powder feed rate 3g/min, LASER HEATING power 1800W, laser head is treating the portable cord speed 5mm/s on cladding surface, and in welding process, overlapping rate is 30%.The thickness of laser cladding is about 0.5mm.
(7) carry out dimension control to the combination valve after laser melting coating, if occur, local is not enough, and laser melting coating can be adopted to repair.Deliver next step after guaranteeing to leave enough allowance to carry out machine and add, machine adds in process, should protect non-machine and add face, prevents from occurring colliding with in carrying process, and machine ensures that combination valve overall dimensions is consistent with standard size after adding process.
The combination valve decay resistance that the present embodiment manufactures again is strong, and any surface finish, hardness are high, and bond strength is high, and have good wearability and high-temperature oxidation resistance, the performance test results is see table 2.
embodiment 2
The surface peening preferred process method being applicable to combination valve of the present invention specifically comprises the following steps:
(1) use the instruments such as wire brush, polished silicon wafer, bistrique to remove and treat surface modification combination valve surface rusty stain, the impurity such as the dregs of fat, guarantee that rust staining is removed completely, have etch pit should being cleaned out completely of etch pit, and surface is metallic luster;
(2) the combination valve upper and lower end face argon arc welding that step (1) processes is repaired.Ensure in mending course to leave enough allowance, ensure that combination valve can process completely.Welding wire adopts diameter to be the welding wire of 2.0mm, and wherein the mass fraction of each element is as follows: carbon≤0.03%, Si≤0.6%, Mn, 0.25%-1.00%, Cr:23%-25%, Ni:12%-14%, Fe surplus, and welding condition is electric current 80A, voltage 15V; REPAIR WELDING place surplus is that former accessory size basis increases 3mm;
(3) combination valve that step (2) processes is carried out machining to argon arc welding mend, wherein to the machining needs of the mend beyond upper and lower end face: machine adds the size after process with reference to new part size or be consistent with the correspondingly-sized of non-mend, machine is carried out to upper and lower end face and adds requirement: 0.6mm is reduced respectively in upper and lower end face on life size basis, leave processing dimension to post laser deposition;
(4) be that 180 μm of powder are put in powder feeding buckets by suitable for composition, granularity, the combination valve after using frock step (3) to be processed installs, and checks that whether clamping is firm, and cladding end face is treated in the complete rear acetone cleaning of clamping.In powder, the mass fraction of each element is as follows: P≤0.007%, S≤0.005%, Ni:1.25%-3.50%, Cr:15%-18%, Fe surplus;
(5) after combination valve is clamping, be placed on stably on work top, adjust the distance of laser head and workpiece, the dry running program when not opening the light, confirm that program is errorless;
(6) the program dry running of step (5) errorless after, zero, opens powder feeding switch, checks that whether powder, gas unobstructed.Until powder feeding mouth uniform and stable send metal dust after to open the light working procedure.Laser cladding carries out for the upper and lower end face of the combination valve after above-mentioned process, control laser cladding direction for being parallel to combination valve end face direction, and unidirectional cladding, as shown in Figure 1, the state modulator of laser cladding process is as follows: laser cladding powder feed rate 8g/min, LASER HEATING power 2200W, laser head is treating the portable cord speed 5mm/s on cladding surface, and in welding process, overlapping rate is 50%.The thickness of laser cladding is about 0.6mm.
(7) carry out dimension control to the combination valve after laser melting coating, if occur, local is not enough, and laser melting coating can be adopted to repair.Deliver next step after guaranteeing to leave enough allowance to carry out machine and add, machine adds in process, should protect non-machine and add face, prevents from occurring colliding with in carrying process, and machine ensures that combination valve overall dimensions is consistent with standard size after adding process.
The combination valve decay resistance that the present embodiment manufactures again is strong, and any surface finish, hardness are high, and bond strength is high, and have good wearability and high-temperature oxidation resistance, the performance test results is see table 2.
comparative example 1
Adopt conventional combination valve of brushing anticorrosive coating.
comparative example 2
Adopt conventional mar stainless steel combination valve.
The service check result of combination valve under table 2 many kinds for the treatment of process
Visible stronger by the combination valve wear-corrosion resistance after the method for the invention process, integral surface is bright and clean, hardness is high, for the hardness after the laser treatment of upper and lower end face and abrasion-proof corrosion-proof performance higher, can be good at meeting combination valve in use to wear-resistant strengthening performance and the high-temperature oxidation resistance requirement of end face, erosive wear under making whole combination valve can withstand oil exploitation environment, substantially increases the service life of combination valve.
Below be only that the preferred embodiment of the present invention is described; technical scheme of the present invention is not limited to this; the any known distortion that those skilled in the art do on the basis that major technique of the present invention is conceived all belongs to the claimed technology category of the present invention, and the concrete protection domain of the present invention is as the criterion with the record of claims.
Claims (7)
1. an abrasion-proof corrosion-proof processing method for petroleum industry combination valve, is characterized in that, comprise the following steps:
(1), removing surface is carried out to combination valve;
(2), by the combination valve surface after cleaning adopt argon arc welding to repair, in mending course, ensure that enough allowance is left on combination valve surface;
(3) combination valve after, repairing step (2) carries out machining, make it on original size basis, reduce more than 0.5mm to the machining of combination valve upper and lower end face, the machining on other surfaces beyond combination valve upper and lower end face is performed with reference to new part standard size and tolerance;
(4), use frock by step (3) process after combination valve install after, the upper and lower end face of combination valve is cleared up, and has debugged laser cladding device;
(5), to laser cladding device add the coating power that granularity is 45 ~ 180 μm, the mass percent of described coating power consists of: P≤0.007%, S≤0.005%, Ni:1.25%-3.50%, Cr:15%-18%, Fe surplus;
(6), open the powder feeding switch of laser cladding device, check powder, whether gas is unobstructed, until powder feeding mouth is uniform and stable send coating power after open laser working procedure, laser cladding process is carried out to the upper and lower end face of combination valve, thus it is extremely low to form dilution factor on the upper and lower end face of combination valve, with the thickness of the matrix metallurgical binding laser cladding face coat at more than 0.5mm, in laser cladding processing procedure, control laser cladding direction is the unidirectional deposition being parallel to combination valve end face direction, laser cladding powder feed rate is 3-8g/min, LASER HEATING power is 1800-2200W, laser head is 4-6mm/s in the portable cord speed on surface to be deposited, deposition overlapping rate is 30% ~ 50%,
(7), to the combination valve after laser cladding process carry out dimension control, guaranteeing to leave the further machining processes of the laggard row of enough allowance, is standard size by combination valve dimensioned.
2. the abrasion-proof corrosion-proof processing method of petroleum industry combination valve according to claim 1, it is characterized in that, wherein step (1) specifically comprises: use wire brush, polished silicon wafer or bistrique to remove rusty stain, the dregs of fat impurity on the pending surface of combination valve, and etch pit is cleared up, after cleaning, combination valve surface is metallic luster.
3. the abrasion-proof corrosion-proof processing method of petroleum industry combination valve according to claim 1, is characterized in that, wherein in step (2), the wlding that argon arc welding adopts is the welding wire of diameter 2.0mm, and in welding wire, the mass percent of each element consists of: C≤0.03%, Si≤0.6%, Mn, 0.25%-1.00%, Cr:23%-25%, Ni:12%-14%, Fe surplus, when argon arc welding is repaired, electric current is 65 ~ 80A, and voltage is 12 ~ 15V, in mending course controls the reinforcement in REPAIR WELDING region at 2-5mm.
4. the abrasion-proof corrosion-proof processing method of petroleum industry combination valve according to claim 1, it is characterized in that, wherein in step (3), carry out the size that the machining on other surfaces beyond combination valve upper and lower end face does not carry out repair by welding with reference to this surface, other surfaces after ensureing machining beyond combination valve upper and lower end face have unified size.
5. the abrasion-proof corrosion-proof processing method of petroleum industry combination valve according to claim 1, it is characterized in that, wherein step (4) specifically comprises: use three to grab chuck (2,6) by fastening for combination valve end, expose upper surface and the lower surface of combination valve, and clear up upper and lower end face with acetone soln, then combination valve is steadily placed on work top, adjust the laser head of laser cladding device and the distance of end face, the dry running by setup program when not opening the light, confirms the errorless rear zero of program.
6. the abrasion-proof corrosion-proof processing method of petroleum industry combination valve according to any one of claim 1-5, it is characterized in that, the case hardness of the combination valve after described abrasion-proof corrosion-proof disposal methods is at more than 58HRC.
7. a petroleum industry combination valve, is characterized in that, described combination valve is for carrying out the combination valve after surface modification treatment through abrasion-proof corrosion-proof processing method described in any one of claim 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510769474.7A CN105269260B (en) | 2015-11-12 | 2015-11-12 | A kind of abrasion-proof corrosion-proof processing method of petroleum industry combination valve and the combination valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510769474.7A CN105269260B (en) | 2015-11-12 | 2015-11-12 | A kind of abrasion-proof corrosion-proof processing method of petroleum industry combination valve and the combination valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105269260A true CN105269260A (en) | 2016-01-27 |
| CN105269260B CN105269260B (en) | 2017-12-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110241411A (en) * | 2019-06-11 | 2019-09-17 | 西安文理学院 | Repair the ultrahigh speed laser cladding powder and restorative procedure of impaired water filling combination valve |
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