CN101519761B - Steel-wire galvanizing zinc-melting device and pouring material thereof - Google Patents
Steel-wire galvanizing zinc-melting device and pouring material thereof Download PDFInfo
- Publication number
- CN101519761B CN101519761B CN2009100645763A CN200910064576A CN101519761B CN 101519761 B CN101519761 B CN 101519761B CN 2009100645763 A CN2009100645763 A CN 2009100645763A CN 200910064576 A CN200910064576 A CN 200910064576A CN 101519761 B CN101519761 B CN 101519761B
- Authority
- CN
- China
- Prior art keywords
- zinc
- high alumina
- steel
- melting device
- wire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention relates to a steel-wire galvanizing zinc-melting device and a pouring material thereof. The steel-wire galvanizing zinc-melting device comprises a heating container formed by the surrounding of end walls of the circumference, a heater and a temperature sensor, blind holes are respectively and vertically arranged in walls of the crossing angle positions of four right angles of the heating container, the depth ratio of the blind holes and the heating container is 0.5 to 0.7, the heating container is at least arranged on the internal surfaces of the end walls of both sides of the heating container, the heater comprises an assembled-type electric heating board formed by the aligned arrangement of heating board bars, and an outside sleeve of the temperature is made of tungsten-molybdenum-boron alloy. The pouring material is made by mixing high alumina pouring material, water glass and water according to the weight ratio of 80-100:2 to 4:1-3. The galvanizing zinc-melting deviceand the pouring material thereof have high strength, scouring resistance, high-temperature resistance, good heat insulation performance, long service life, good heat conduction and heat insulation pe rformances, no zinc slag, obvious energy saving and excellent popularizing value and economic benefit.
Description
One, technical field:
The present invention relates to the steel-wire galvanizing technology in the Steel Wire Products Industry, particularly relate to a kind of steel-wire galvanizing zinc-melting device and used mould material thereof.
Two, background technology:
Galvanizing (Hot-dip galvanizing) is the simple and effective steel protection technology of a kind of technology, the steel product surface is through after the pot galvanize, its pot galvanize coating has good atmospheric corrosion resistance characteristic, steel matrix and zinc layer have good adhesion and performance such as can process, thereby are widely used in the metal products protection against corrosions such as steel product such as steel plate galvanized, steel pipe and steel wire and communications and transportation, communication and electric power, building trade.
Steel wire continuous hot-dipping galvanizing production technique is: steel wire → degreasing degreasing → water rinse → hydrochloride derusting → water rinse → dipping plating assistant agent → oven dry → galvanizing → aftertreatment → finished product.Wherein the galvanizing operation is a link very important in the whole process of production, steel wire enters in the melt metal zinc liquid through after the pre-treatment, steel wire soaks into through after a while in zinc liquid, form the fe-zn alloy layer of metallurgical binding between steel wire matrix and the metallic zinc liquid by modes such as dissolving, chemical reaction and diffusions, after steel wire leaves zinc liquid in the metallic zinc of alloy layer surface attachment one deck through cooled and solidified, thereby finish the galvanizing of steel wire.
The metallic zinc fusing point is 419.5 ℃, melt metal zinc liquid is after solid-state zinc ingot metal is subjected to being higher than the heat of 419.5 ℃ of fusing points, just can make solid-state metallic zinc become mobile well zinc liquid, in temperature is controlled at 450～460 ℃ of scopes, at this moment just can be used for the galvanizing of steel wire.The zinc pot is used the adding hot melt zinc, contain zinc equipment of present domestic steel wire galvanizing, and the zinc pot melt zinc, Sheng zinc has three kinds of forms.
First kind of form is to add hot melt zinc, contain zinc with ceramic zinc pot, and around the pot body and bottom is mixed the back one piece by high-al clay, aggregate, grog and high temperature resistant cement and is shaped, but heating source is coal gas, Sweet natural gas.When molten zinc and steel wire galvanizing, but coal gas or Sweet natural gas by control valve, burner and air-breathing device the flame of fuel combustion is injected directly on above the solid-state metal zinc ingot, slowly be molten into liquid zinc after zinc ingot metal is heated; During the steel wire galvanizing, the flame of fuel combustion injects directly on above the zinc liquid, needed heat during with supply steel wire galvanizing.This molten zinc, galvanizing mode are directly contacted with zinc by flame, and the zinc oxide that the zinc oxidation produces is very serious, account for 20～25% of zinc total burn-off in the steel wire galvanizing, and the consumption of zinc is very high; The waste gas of zinc oxide dust, zinc fume and fuel combustion spreads in production plant, does not meet environmental requirement, and the worker has certain harm to healthy for a long time under this environment.
Second kind of molten zinc, Sheng zinc form are the pot bodies with the welding of thick iron (steel) scutum, and type of heating is to adopt in the heating of iron (steel) scutum pot external body, also cries outside the side and heats; Make the solid-state zinc ingot metal fusing in pot body, steel wire is the dipping pot galvanize in zinc liquid.This molten zinc, Sheng zinc and steel wire galvanizing mode are compared with first kind of form, the waste gas that zinc oxide, zinc fume and the fuel combustion that does not have the burning of zinc liquid to be generated produced, and Working environment is comparatively clean; But when the steel wire galvanizing, the zinc liquid of high-temperature fusion contacts with irony (steel) plate pot body and can form iron-zinc alloy cadmia (FeZn
13), in general the growing amount of this cadmia is that iron and the zinc reaction of 1Kg can generate the 25Kg cadmia, the cadmia generation accounts for 35～40% of the total zinc consumption of steel wire galvanizing, therefore causes the consumption height of zinc; Have the iron-zinc alloy bits of quite a few suspension simultaneously in the zinc liquid, make zinc liquid become thickness gradually, thereby reduce the flowability of zinc liquid, make ductility, the prehensile technical indicator variation of Steel Wire Surface zinc coating.More than the molten zinc of two kinds of zinc pots, to contain the existing drawback of zinc mode apparent, do not meet the energy-saving and environmental protection requirement, belongs to the zinc-melting device that is eliminated.
The third molten zinc, containing zinc and steel wire galvanizing mode, is the ceramic zinc pot that utilizes in the first method, adopts that the heating of dress resistance wire directly contacts with zinc liquid (also claiming the electric heating tube internal heating) as heating element in the silica tube.Though this method has overcome above-mentioned two kinds of zinc fumes that method produced, zinc oxide dust, combustion exhaust, cadmia and the high problem of zinc gray raw material consumption, but still exist four drawbacks that are difficult for overcoming: the one, the flame that need use burner to send in advance is fused into liquid Zn to solid-state zinc ingot metal, be length that the silica tube resistance wire heating element of 600mm is being inserted into fused zinc liquid the inside successively along zinc pot length direction both sides again, in this molten zinc process, still exist the phenomenon of zinc burning becoming zinc oxide and generation zinc fume; The 2nd, though silica tube resistance wire heating element is high temperature resistant, but because of in zinc liquid, being subjected to the pressure effect of high temperature and zinc liquid to its tube wall, after using for some time, silica tube can burst fragmentation, thereby swim in fused zinc liquid surface, influence the normal galvanizing production of steel wire, even the electric short circuit phenomenon can occur and cause stopping production, use cost is higher; The 3rd, silica tube resistance wire heating element needs preheating before entering zinc liquid, otherwise because temperature head is easy to more greatly silica tube fracture and cracked phenomenon occur in moment, brings difficulty for replacing and maintenance, also causes scald during operation easily; The 4th, silica tube resistance wire heating element can only be installed in zinc melting pot body both sides along its length, zinc pot two ends make the interior two ends of zinc pot zinc liquid temperature be lower than the both sides temperature because of the silica tube heating element can't be installed, make zinc liquid temperature inhomogeneous, thereby cause the inhomogeneous of wire galvanization layer and substandard product occurs.In a word, this kind heating zinc-melting device also is unfavorable for the production practical application.
The patent No. be ZL00206106.6 patent disclosure a kind of " combined electrical hot-plate ", prove that by actual production this combined electrical hot-plate can satisfy the molten galvanized requirement of zinc.The present invention by further improvement, develops steel-wire galvanizing zinc-melting device on the basis of this patent.
Three, summary of the invention:
The technical problem to be solved in the present invention: overcome the deficiency in the background technology, provide a kind of installation simple, steel-wire galvanizing zinc-melting device that zinc liquid temperature is even, error is little, production cost is low and mould material thereof, this device have good heat conductivity, long service life, energy-conservation obviously and advantage such as environmentally safe.
Technical scheme of the present invention is:
Steel-wire galvanizing zinc-melting device, rectangular parallelepiped that headwall surrounds around comprising or square heating container, well heater, temperature sensor, in the wall of the angle of cut position, four right angles of rectangular parallelepiped or square heating container, vertically be provided with blind hole respectively, its degree of depth is 0.5～0.7 with the ratio of the heating container degree of depth, well heater is installed in the headwall internal surface of heating container both sides at least, described well heater is made up of the combined electrical hot plate that heating lath alignment arrangement forms, and the outer tube of described temperature sensor is that liquid zinc corrosion resistant metal tungsten boron alloy is made.
Described blind hole shape of cross section is circle or regular polygon, and the diameter of described circular blind hole is 25～35mm.
Described electric heating lath comprises the liquid zinc corrosion resistant heat-conducting layer and the inboard electric heating body in the outside, and wherein electric heating body vertically is installed in the inner chamber of heat-resisting heat-conducting layer, and is provided with lead-in wire in the upper end of electric heating body.
Zinc liquid temperature control adopts that the propagated sensation device is connected with the PLD automatic temperature control system in the thermopair that liquid zinc corrosion resistant metal tungsten boron alloy makes during molten zinc, and zinc liquid temperature is controlled in the scope of temperature ± 2 ℃ of setting.
Be used for the mould material of above-mentioned steel-wire galvanizing zinc-melting device, represent with weight part, this mould material by high alumina castable, water glass and water by 80～100: 2～4: 1～3 weight ratio is mixed and is formed; Described high alumina castable be bauxites aggregate, high alumina, high alumina fine powder and aluminate cement by 30～50: 20～40: 5～15: 10～20 weight ratio is mixed and is formed.
The ratio of described high alumina castable, water glass and water is 100: 4: 3, and the ratio of described bauxites aggregate, high alumina, high alumina fine powder and aluminate cement is 40: 30: 10: 15.
The content of aluminum oxide is 75～85% in described bauxites aggregate, high alumina or the high alumina fine powder, and described water glass density is 1.3～1.5g/cm
3The granularity of described bauxites aggregate, high alumina, high alumina fine powder is respectively 3～5mm, 2～3mm, 100～200 orders.
Positive beneficial effect of the present invention:
1, the present invention adopts the combined electrical hot-plate as heating member, has neither to react with high temperature zinc liquid, anti-ly again washes away, high temperature is indeformable, not oxidation, not brittle failure of pressurized, the fast advantage of heat conduction again; The thermopair that temperature control method adopts the liquid zinc corrosion resistant metallic substance to make is connected with the PLD automatic temperature control system, zinc liquid temperature is controlled in the range of set temperature, temperature accuracy can reach ± 2 ℃ in, and zinc liquid temperature is even in the zinc pot, zinc liquid good fluidity, can make the Steel Wire Surface zinc coating even, can reach 4～5 years work-ing life.The Zinc-corrosion resistant thermopair that adopts is conventional stainless steel tube as 50～60 times of thermopair work-ing life of overcoat work-ing life.
2, the present invention adopts high-al clay, aggregate, grog and resistant to elevated temperatures aluminate cement as mould material, make galvanizing zinc-melting device (ceramic zinc pot) behind the one piece, this device is compared with existing zinc-plated zinc-melting device, itself does not react with high temperature zinc liquid, there are not the burning and the cadmia of zinc to generate, environmentally safe meets environment protection requirement; And zinc-melting device intensity height anti-ly washes away, high temperature resistant, good heat insulating, long service life; Casting material formula is simple, with low cost simultaneously, is convenient to promote.
3, steel-wire galvanizing zinc-melting device of the present invention adopts high aluminium material and water glass as mould material, has advantages such as good heat conductivity, good heat preservation performance, no cadmia generation; It is energy-conservation that obviously 1 ton of steel wire of galvanizing can save energy 100KW than existing heating or side type of heating, but conservation zinc about 35～40%.Therefore, this invention has excellent generalization values and economic benefit.
Four, description of drawings:
Fig. 1 is a steel-wire galvanizing zinc-melting device perspective view of the present invention;
Fig. 2 is a heating lath structural representation among Fig. 1.
Among the figure, 1 is headwall, and 2 are the heating lath, and 3 is blind hole, and 4 is " L " shape card article, and 5 is the upper end securing cover plate, and 6 is standing bolt, and 7 is thermal insulation layer, and 8 are lead-in wire, and 9 is " L " shape otch, and 10 is temperature sensor (thermopair), and 11 is headwall outside protection steel plate.
Five, embodiment:
Embodiment one: referring to Fig. 1, Fig. 2, steel-wire galvanizing zinc-melting device, headwall 1 surrounds around comprising rectangular parallelepiped heating container, well heater, temperature sensor 10, four right angle angles of cut at the rectangular parallelepiped heating container vertically are provided with blind hole 3 respectively, blind hole 3 cross sections are circular, diameter is 25～35mm, and blind hole depth is 0.5～0.7 with the ratio of the heating container degree of depth; Well heater is installed in the headwall internal surface of heating container both sides at least, and well heater is to arrange the combined type electrothermal lath 2 that forms by the heating lath alignment of some amount.
Electric heating lath 2 comprises the fire-resistant heat-conducting layer and the inboard electric heating body in the outside, and wherein electric heating body vertically is installed in the inner chamber of fire-resistant heat-conducting layer, and is provided with lead-in wire 8 in the upper end of electric heating body.The fire-resistant heat-conducting layer of electric heating lath 2 adopts the silicon-carbide series material to make through high temperature sintering, neither react with high temperature zinc liquid, again ability wash away, high temperature resistant indeformable, not oxidation, not brittle failure of pressurized.
Single electric heating lath 2 lower end embeddings are sitting in the fixed draw-in groove, top is provided with " L " shape otch 9 that is complementary with " L " shape card article 4, otch contact butt joint between the adjacent two electric heating laths 2 or butt joint back, gap are fastened with described " L " shape card article 4 shapes coupling, and wherein " L " shape card article 4 the other ends are fixed on the headwall upper surface by bolt 6.
The temperature sensor of steel-wire galvanizing zinc-melting device comprises sensor probe and outer tube, wherein outer tube adopts the tungsten boron alloy to make, temperature sensor is connected with the PLD automatic temperature control system, and zinc liquid temperature is controlled in the range of set temperature, temperature accuracy can reach ± 2 ℃ in.
Embodiment two: basic identical with embodiment 1, referring to Fig. 1, Fig. 2, difference is,
Steel-wire galvanizing zinc-melting device, headwall surrounds around comprising square heating container, well heater, temperature sensor 10, four right angle angles of cut at the square heating container vertically are provided with regular polygon blind hole 2 respectively, and its degree of depth is 0.5～0.7 with the ratio of the heating container degree of depth.
The mould material that is used for above-mentioned steel-wire galvanizing zinc-melting device, represent with weight part, the ratio of high alumina castable, water glass and water is 100: 4: 3, and wherein the ratio of bauxites aggregate, high alumina, high alumina fine powder and aluminate cement is 40: 30: 10 in the high alumina castable: 15;
Wherein the content of aluminum oxide is 75～85% in bauxites aggregate, high alumina or the high alumina fine powder, and the granularity of bauxites aggregate, high alumina, high alumina fine powder is respectively 3～5mm, 2～3mm, 100～200 orders; Described water glass is water glass (Na
2OnSiO
2) aqueous solution, density 1.3～1.5g/cm when it uses
3(being that modulus is 2.6～3.0).
The technology of configuration high alumina castable: (1) is pre-mixed bauxites aggregate, high alumina, high alumina fine powder and aluminate cement evenly in proportion, forms high alumina castable; (2) add entry, continue to stir; (3) adding water glass again continues to stir.
Adopt disposable method when the zinc-melting device headwall, the centre can not stop at interval, otherwise wall occurs easily.It is closely knit to use vibrating device that mould material is shaken, and the vibrations of limit, limit are until finishing.After finishing, should prevent that in summer the sun is exposed to the sun and rainwater soaks pouring; Should be incubated in the winter time and avoid being subjected to cold freezing; Its seasoning is advisable.
Embodiment three: steel-wire galvanizing zinc-melting device is with embodiment 1 or 2, and difference is,
The mould material that is used for steel-wire galvanizing zinc-melting device, wherein high alumina castable, water glass and water mix composition by 80: 2: 1 weight ratio; Wherein high alumina castable is that the proportioning of bauxites aggregate, high alumina, high alumina fine powder and aluminate cement is 30: 20: 5: 10.
The content of aluminum oxide is 80～85% in described bauxites aggregate, high alumina or the high alumina fine powder, and described water glass density is 1.4g/cm
3The granularity of described bauxites aggregate, high alumina, high alumina fine powder is respectively 3～5mm, 2～3mm, 100～200 orders.
Embodiment four: steel-wire galvanizing zinc-melting device is with embodiment 1 or 2, and difference is,
The mould material that is used for steel-wire galvanizing zinc-melting device, wherein high alumina castable, water glass and water mix composition by 100: 4: 3 weight ratio; Wherein high alumina castable is that the proportioning of bauxites aggregate, high alumina, high alumina fine powder and aluminate cement is 50: 40: 15: 20.
The content of aluminum oxide is 75～80% in described bauxites aggregate, high alumina or the high alumina fine powder, and described water glass density is 1.35g/cm
3The granularity of described bauxites aggregate, high alumina, high alumina fine powder is respectively 3～5mm, 2～3mm, 100～200 orders.
Embodiment five: steel-wire galvanizing zinc-melting device is with embodiment 1 or 2, and difference is,
The mould material that is used for steel-wire galvanizing zinc-melting device, wherein high alumina castable, water glass and water mix composition by 90: 2: 1 weight ratio; Wherein high alumina castable is that the proportioning of bauxites aggregate, high alumina, high alumina fine powder and aluminate cement is 35: 20: 5: 10.
The content of aluminum oxide is 75～85% in described bauxites aggregate, high alumina or the high alumina fine powder, and described water glass density is 1.45g/cm
3The granularity of described bauxites aggregate, high alumina, high alumina fine powder is respectively 3～5mm, 2～3mm, 100～200 orders.
Embodiment six: steel-wire galvanizing zinc-melting device is with embodiment 1 or 2, and difference is,
The mould material that is used for steel-wire galvanizing zinc-melting device, wherein high alumina castable, water glass and water mix composition by 95: 3: 2 weight ratio; Wherein high alumina castable is that the proportioning of bauxites aggregate, high alumina, high alumina fine powder and aluminate cement is 40: 20: 10: 15.
The content of aluminum oxide is 75～85% in described bauxites aggregate, high alumina or the high alumina fine powder, and described water glass density is 1.3～1.5g/cm
3The granularity of described bauxites aggregate, high alumina, high alumina fine powder is respectively 3～5mm, 2～3mm, 100～200 orders.
Embodiment seven: steel-wire galvanizing zinc-melting device is with embodiment 1 or 2, and difference is,
The mould material that is used for steel-wire galvanizing zinc-melting device, wherein high alumina castable, water glass and water mix composition by 98: 2.5: 1.5 weight ratio; Wherein high alumina castable is that the proportioning of bauxites aggregate, high alumina, high alumina fine powder and aluminate cement is 45: 25: 12: 15.
The content of aluminum oxide is 80～85% in described bauxites aggregate, high alumina or the high alumina fine powder, and described water glass density is 1.35g/cm
3The granularity of described bauxites aggregate, high alumina, high alumina fine powder is respectively 3～5mm, 2～3mm, 100～200 orders.
Embodiment eight: steel-wire galvanizing zinc-melting device is with embodiment 1 or 2, and difference is,
The mould material that is used for steel-wire galvanizing zinc-melting device, wherein high alumina castable, water glass and water mix composition by 90: 3: 2.5 weight ratio; Wherein high alumina castable is that the proportioning of bauxites aggregate, high alumina, high alumina fine powder and aluminate cement is 32: 35: 15: 15.
The content of aluminum oxide is 80～85% in described bauxites aggregate, high alumina or the high alumina fine powder, and described water glass density is 1.4g/cm
3The granularity of described bauxites aggregate, high alumina, high alumina fine powder is respectively 3～5mm, 2～3mm, 100～200 orders.
Claims (7)
1. steel-wire galvanizing zinc-melting device, headwall surrounds around comprising rectangular parallelepiped heating container, well heater, temperature sensor, it is characterized in that: the angle of cut position, four right angles at the rectangular parallelepiped heating container vertically is provided with blind hole respectively, its degree of depth is 0.5～0.7 with the ratio of the heating container degree of depth, well heater is installed in the headwall internal surface of both sides at least, and described well heater is to arrange the combined electrical hot plate that forms by the heating lath alignment of some amount; The electric heating lath comprises the fire-resistant heat-conducting layer and the inboard electric heating body in the outside, the fire-resistant heat-conducting layer of electric heating lath adopts the silicon-carbide series material to make through high temperature sintering, wherein electric heating body vertically is installed in the inner chamber of fire-resistant heat-conducting layer, and is provided with lead-in wire in the upper end of electric heating body; Single electric heating lath lower end embedding is sitting in the fixed draw-in groove, top is provided with " L " shape otch that is complementary with " L " shape card article, otch contact butt joint between the adjacent two electric heating laths or butt joint back, gap are fastened with described " L " shape card article shape coupling, and wherein " L " shape card article the other end is fixed on the headwall upper surface.
2. steel-wire galvanizing zinc-melting device according to claim 1 is characterized in that: described blind hole shape of cross section is circle or regular polygon.
3. steel-wire galvanizing zinc-melting device according to claim 2 is characterized in that: described circular blind hole diameter is 25～35mm.
4. steel-wire galvanizing zinc-melting device according to claim 1, it is characterized in that: zinc liquid temperature control adopts that the propagated sensation device is connected with the PLD automatic temperature control system in the thermopair that liquid zinc corrosion resistant metal tungsten boron alloy makes during molten zinc, and zinc liquid temperature is controlled in the scope of temperature ± 2 ℃ of setting.
5. mould material that is used for the described steel-wire galvanizing zinc-melting device of claim 1 is characterized in that: represent with weight part, this mould material by high alumina castable, water glass and water by 80～100: 2～4: 1～3 weight ratio is mixed and is formed; Described high alumina castable be bauxites aggregate, high alumina, high alumina fine powder and aluminate cement by 30～50: 20～40: 5～15: 10～20 weight ratio is mixed and is formed; The content of aluminum oxide is 75～85% in described bauxites aggregate, high alumina or the high alumina fine powder.
6. mould material according to claim 5 is characterized in that: the ratio of described high alumina castable, water glass and water is 100: 4: 3, and the ratio of described bauxites aggregate, high alumina, high alumina fine powder and aluminate cement is 40: 30: 10: 15.
7. according to claim 5 or 6 described mould material, it is characterized in that: described water glass density is 1.3～1.5g/cm
3Described bauxites aggregate, high alumina, high alumina powder particle size are respectively 3～5mm, 2～3mm, 100～200 orders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100645763A CN101519761B (en) | 2009-04-08 | 2009-04-08 | Steel-wire galvanizing zinc-melting device and pouring material thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100645763A CN101519761B (en) | 2009-04-08 | 2009-04-08 | Steel-wire galvanizing zinc-melting device and pouring material thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101519761A CN101519761A (en) | 2009-09-02 |
| CN101519761B true CN101519761B (en) | 2011-05-04 |
Family
ID=41080556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100645763A Active CN101519761B (en) | 2009-04-08 | 2009-04-08 | Steel-wire galvanizing zinc-melting device and pouring material thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101519761B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101905530B (en) * | 2010-07-16 | 2012-10-24 | 沈阳飞机工业（集团）有限公司 | Heating/heat insulation platform of heat former |
| CN102899597B (en) * | 2012-11-13 | 2014-08-20 | 如皋市同泰电力器材有限公司 | Galvanizing rig for galvanized ring of insulator hardware |
| CN114150247B (en) * | 2021-11-10 | 2023-08-15 | 湖南利钢金属制品有限公司 | Device for improving local overheating of zinc pot |
-
2009
- 2009-04-08 CN CN2009100645763A patent/CN101519761B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN101519761A (en) | 2009-09-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102815951B (en) | Flame-resistant corrosion-resistant coating | |
| CN100381516C (en) | High temperature far infrared insulated energy-saving paint and method for preparing same | |
| CN101519761B (en) | Steel-wire galvanizing zinc-melting device and pouring material thereof | |
| CN101413757A (en) | Aluminum melting furnace capable of improving service life and thermal efficiency | |
| CN102336564A (en) | Surface composite ceramic material for large coke oven and preparation method | |
| CN101162636B (en) | Induction coil protection layer for intermediate frequency stove | |
| CN201390777Y (en) | Heating rod of internal heating type hot-dip galvanized device | |
| CN105258510B (en) | A kind of complex heat-preservation furnace lining and preparation method | |
| KR20200099549A (en) | Submerged-burner melting furnace with self-crucible wall | |
| CN101338346B (en) | Process for coating fire-resistant material on hot blast valve plate | |
| CN101261077B (en) | Ceramic crucible for microwave heating molten metal | |
| CN203352828U (en) | Silicon carbide ceramic galvanized electric heating protective sleeve | |
| CN212384587U (en) | Steel ladle furnace lining | |
| CN204058574U (en) | A kind of hot-dip galvanized pan fiber furnace body | |
| CN106643151A (en) | Molten zinc heat preserving furnace | |
| CN202157458U (en) | Thermal insulation building energy conservation wallboard | |
| CN108676391B (en) | High-temperature-resistant zinc-plated aluminum-zinc-plated coating and preparation method thereof | |
| CN2852015Y (en) | Internal heating zinc boiler | |
| CN202671439U (en) | Calcium oxide and calcium-oxide-containing series refractory material with laser cladding surface layer | |
| CN202792978U (en) | Medium-temperature high-strength castable prefabricated part for anchoring connection | |
| CN206362176U (en) | Molten zinc holding furnace | |
| CN204787821U (en) | Remove high temperature resistant composite furnace wall of lead slag freshening stove | |
| CN202540840U (en) | Calcium oxide and calcium oxide contained refractory material with laser-cladding surface layer | |
| CN206033842U (en) | Multistage preheating device of hot -galvanize | |
| CN202022965U (en) | Heating rod for internal heating type hot-dip galvanizing equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |