CN103695835A - Hard alloy filler repairing technology - Google Patents
Hard alloy filler repairing technology Download PDFInfo
- Publication number
- CN103695835A CN103695835A CN201310672379.6A CN201310672379A CN103695835A CN 103695835 A CN103695835 A CN 103695835A CN 201310672379 A CN201310672379 A CN 201310672379A CN 103695835 A CN103695835 A CN 103695835A
- Authority
- CN
- China
- Prior art keywords
- product
- wimet
- repair technology
- technology according
- filler
- 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.)
- Granted
Links
Abstract
The invention relates to a hard alloy filler repairing technology and aims at solving the problem of serious waste caused by difficult repair of hard alloy products in the prior art. The hard alloy filler repairing technology mainly comprises the following steps: polishing of a defective part, corrosion of the defective part, product preheating, defective part filling with supersonic-speed high-temperature flame coating machine, pressing of a repaired part, aging treatment on a product and secondary sintering. According to the processing technology provided by the invention, by adopting a technology of supplementing material to the defective part of the hard alloy product, the problem of serious waste of hard alloy can be effectively solved, and the cost loss can be saved by 150 yuan for repairing one kilogram of product, thus tens of thousands of cost loss can be reduced every year.
Description
Technical field
The present invention relates to a kind of Wimet filler repair technology.
Background technology
While there is defect in existing Wimet, mainly by following two kinds of means, process, return to burn and process when defect is less, returning firing technique is by unnecessary amount is transferred to few one side by deformation, processing must, same axial, directly be scrapped in two sides when defect is more; Return firing technique can only be to surplus poor be 0.5 or thin-wall product process; If all lack surplus inside and outside some products, can only scrap processing, some product height also can only be scrapped processing without surplus, and it is mobile in market devaluation that Yi Ge Wimet company has the surplus defect waste product of 1～2 ton to produce waste product every year, causes the very big wasting of resources.
Summary of the invention
The invention provides a kind of Wimet filler repair technology, be intended to solve hart metal product in prior art and because repairing difficulty, cause the problem of serious waste.
In order to solve above technical problem, the present invention is achieved through the following technical solutions: a kind of Wimet filler repair technology, comprises following processing step successively:
A, the defect part of product is shown in to light with grinder buffing;
B, with corrosive fluid, the burnishing part of product is corroded;
C, step B is processed to product later under 200 ℃～250 ℃ environment, carry out thermal pretreatment;
D, the cobalt coated tungsten carbide powder that is 20%～30% by cobalt contents axially or side direction send flame flow to, defect part to product after preheating sprays repeatedly, until meet the requirements of thickness, the speed of described flame flow in 1500m/s～2000m/s, temperature is in 2900 ℃～3100 ℃;
E, to repairing position through the patched product of step D, with graphite cake, apply the pressure of 3～5 kilograms;
F, the product that step e is pressurizeed are placed in vacuum sintering furnace, in vacuum sintering furnace, vacuumize, and make the temperature in vacuum sintering furnace rise to fast 100 ℃～150 ℃, and product is incubated to two hours in vacuum sintering furnace;
G, the product of process step F being processed by normal product sintering process carry out double sintering, after double sintering completes, remove pressure.
Further, the corrosive fluid described in step B is the aqueous solution of the Tripotassium iron hexacyanide and potassium hydroxide, and in the aqueous solution, the ratio of the Tripotassium iron hexacyanide, potassium hydroxide and water is followed successively by 1:1:10; Good to product corrosive effect.
Further, in step D, cobalt coated tungsten carbide powder mean particle sizes is 0.6um～0.8um; Be conducive to obtain high, the fine and close quality coating of bonding strength.
Further, in the spraying process of step D, adopt argon gas to carry out cooling protection; Anti-oxidation.
Further, at the cobalt contents of cobalt coated tungsten carbide powder described in step D, be not less than the cobalt contents of product; Improve the content of cobalt, be convenient to improve adhesive effect.
Further, in the spraying process of step D, flame used is 3000 ℃, and produces by the burning of oxygen and hydrogen; Adopt relatively environmental protection of oxyhydrogen flame, and be easy to realize and process accurately operation.
Further, the operating process of step e completed before product is completely not cooling; Reduce calorific loss, save energy.
Further, in step G the top temperature of double sintering than original sintering temperature high 5 ℃～10 ℃; Be convenient to improve adhesive effect.
Compared with prior art advantage of the present invention is: a kind of complete processing provided by the invention is by the technique to the defective position of hart metal product supplementary material, can effectively solve Wimet and waste serious problem, one kilogram of product of every reparation can reduce by the cost allowance of 150 yuan, can reduce every year by tens0000 cost allowance.
Embodiment
A Wimet filler repair technology, comprises following processing step successively:
A, the defect part of product is shown in to light with grinder buffing;
B, with corrosive fluid, the burnishing part of product is corroded;
C, step B is processed to product later under 200 ℃～250 ℃ environment, carry out thermal pretreatment; Be conducive to and the combination of spray below;
D, the cobalt coated tungsten carbide powder that is 20%～30% by cobalt contents axially or side direction send flame flow to, defect part to product after preheating sprays repeatedly, until meet the requirements of thickness, the speed of described flame flow in 1500m/s～2000m/s, temperature is in 2900 ℃～3100 ℃, because the high spraying particle of speed of flame flow melts or during half melting state being heated to, can be accelerated to the speed up to 300～650m/s simultaneously, thereby it is high to obtain bonding strength, fine and close quality coating, supersonic flame is due to the restriction of the flame stream temperature of being burnt, compare with plasma thermal source, speed is high and temperature is low is about 3000 ℃, for cobalt coated tungsten carbide series hard metal, can effectively suppress the decomposition of wolfram varbide in spraying process, coating not only bonding strength is high, fine and close, and can retain to greatest extent the hard, wear-resistant wolfram varbide phase in powder, therefore, rejected region abrasion resistance properties after reparation is superior, carried out this step, the density of repairing part can realize 85% product density,
E, to repairing position through the patched product of step D, with graphite cake, apply the pressure of 3～5 kilograms; When sintering temperature surpasses 1300 °, product and coating become liquid-solid phase simultaneously, for overcoming two solid phase surface tension force, by graphite cake, the coating at spraying position have been exerted pressure to combining closely of two faces;
F, the product after step e is exerted pressure are placed in vacuum sintering furnace, in vacuum sintering furnace, vacuumize, and make the temperature in vacuum sintering furnace rise to fast 100 ℃～150 ℃, and product is incubated to two hours in vacuum sintering furnace;
G, the product of process step F being processed by normal product sintering process carry out double sintering, after double sintering completes, remove pressure; When having carried out this step, the density of repairing part can realize 99% product density.
Corrosive fluid described in step B is the aqueous solution of the Tripotassium iron hexacyanide and potassium hydroxide, and in the aqueous solution, the ratio of the Tripotassium iron hexacyanide, potassium hydroxide and water is followed successively by 1:1:10; In step D, cobalt coated tungsten carbide powder mean particle sizes is 0.6um～0.8um; In the spraying process of step D, adopt argon gas to carry out cooling protection; At the cobalt contents of cobalt coated tungsten carbide powder described in step D, be not less than the cobalt contents of product; In the spraying process of step D, flame used is 3000 ℃, and produces by the burning of oxygen and hydrogen; The operating process of step e completed before product is completely not cooling; In step G the top temperature of double sintering than original sintering temperature high 5 ℃～10 ℃.
A kind of complete processing provided by the invention is by the technique to the defective position of hart metal product supplementary material, can effectively solve Wimet and waste serious problem, one kilogram of product of every reparation can reduce by the cost allowance of 150 yuan, can reduce every year by tens0000 cost allowance, and the density of repairing part can reach 99% of product density, repairing effect is fine.
The foregoing is only specific embodiments of the invention, but technical characterictic of the present invention is not limited to this, any those skilled in the art is in the field of the invention, and the variation of doing or modification are all encompassed among the scope of the claims of the present invention.
Claims (8)
1. a Wimet filler repair technology, is characterized in that: comprise successively following processing step:
A, the defect part of product is shown in to light with grinder buffing;
B, with corrosive fluid, the burnishing part of product is corroded;
C, step B is processed to product later under 200 ℃～250 ℃ environment, carry out thermal pretreatment;
D, the cobalt coated tungsten carbide powder that is 20%～30% by cobalt contents axially or side direction send flame flow to, defect part to product after preheating sprays repeatedly, until meet the requirements of thickness, the speed of described flame flow in 1500m/s～2000m/s, temperature is in 2900 ℃～3100 ℃;
E, to repairing position through the patched product of step D, with graphite cake, apply the pressure of 3～5 kilograms;
F, the product that step e is pressurizeed are placed in vacuum sintering furnace, in vacuum sintering furnace, vacuumize, and make the temperature in vacuum sintering furnace rise to fast 100 ℃～150 ℃, and product is incubated to two hours in vacuum sintering furnace;
G, the product of process step F being processed by normal product sintering process carry out double sintering, after double sintering completes, remove pressure.
2. a kind of Wimet filler repair technology according to claim 1, is characterized in that: the corrosive fluid described in step B is the aqueous solution of the Tripotassium iron hexacyanide and potassium hydroxide, and in the aqueous solution, the ratio of the Tripotassium iron hexacyanide, potassium hydroxide and water is followed successively by 1:1:10.
3. a kind of Wimet filler repair technology according to claim 1, is characterized in that: in step D, cobalt coated tungsten carbide powder mean particle sizes is 0.6um～0.8um.
4. a kind of Wimet filler repair technology according to claim 1, is characterized in that: in the spraying process of step D, adopt argon gas to carry out cooling protection.
5. a kind of Wimet filler repair technology according to claim 1, is characterized in that: the cobalt contents that is not less than product at the cobalt contents of cobalt coated tungsten carbide powder described in step D.
6. a kind of Wimet filler repair technology according to claim 1, is characterized in that: flame used is 3000 ℃ in the spraying process of step D, and produces by the burning of oxygen and hydrogen.
7. a kind of Wimet filler repair technology according to claim 1, is characterized in that: the operating process of step e completed before product is completely not cooling.
8. a kind of Wimet filler repair technology according to claim 1, is characterized in that: in step G the top temperature of double sintering than original sintering temperature high 5 ℃～10 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310672379.6A CN103695835B (en) | 2013-12-10 | 2013-12-10 | A kind of Hard alloy filler repair technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310672379.6A CN103695835B (en) | 2013-12-10 | 2013-12-10 | A kind of Hard alloy filler repair technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103695835A true CN103695835A (en) | 2014-04-02 |
| CN103695835B CN103695835B (en) | 2015-12-09 |
Family
ID=50357493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310672379.6A Active CN103695835B (en) | 2013-12-10 | 2013-12-10 | A kind of Hard alloy filler repair technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103695835B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104388721A (en) * | 2014-10-31 | 2015-03-04 | 浙江恒成硬质合金有限公司 | Process for sintering high-cobalt bound alloy product |
| CN104498684A (en) * | 2015-01-19 | 2015-04-08 | 四川科力特硬质合金股份有限公司 | Decarburization method for hard alloy in vacuum sintering furnace |
| CN105127432A (en) * | 2015-09-29 | 2015-12-09 | 浙江恒成硬质合金有限公司 | Preparation method of graded cemented carbide |
| CN111906317A (en) * | 2020-06-16 | 2020-11-10 | 浙江恒成硬质合金有限公司 | Method for making up for defects of tungsten carbide hard alloy product |
| CN111957978A (en) * | 2020-08-19 | 2020-11-20 | 龙泉市陈栋剑铺 | Sword light hammer forging, smelting and repairing process and processing equipment thereof |
| CN114029491A (en) * | 2021-10-22 | 2022-02-11 | 浙江恒成硬质合金有限公司 | Method for repairing inner hole of hard alloy blank |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58147552A (en) * | 1982-02-25 | 1983-09-02 | Hitachi Metals Ltd | Composite jig and tool material and its manufacture |
| WO2006089519A1 (en) * | 2005-02-24 | 2006-08-31 | Praxair S.T. Technology, Inc. | Coated member, especially roller, made of carbon fiber-reinforced plastic (cfk) for paper machines and printing presses, and method for the production of such a member |
| CN102242332A (en) * | 2011-06-20 | 2011-11-16 | 江铃汽车股份有限公司 | Meltallizing surface treatment process |
| CN102554552A (en) * | 2012-01-30 | 2012-07-11 | 重庆生竹科技发展有限公司 | Repair method for thin hollow roller |
-
2013
- 2013-12-10 CN CN201310672379.6A patent/CN103695835B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58147552A (en) * | 1982-02-25 | 1983-09-02 | Hitachi Metals Ltd | Composite jig and tool material and its manufacture |
| WO2006089519A1 (en) * | 2005-02-24 | 2006-08-31 | Praxair S.T. Technology, Inc. | Coated member, especially roller, made of carbon fiber-reinforced plastic (cfk) for paper machines and printing presses, and method for the production of such a member |
| CN102242332A (en) * | 2011-06-20 | 2011-11-16 | 江铃汽车股份有限公司 | Meltallizing surface treatment process |
| CN102554552A (en) * | 2012-01-30 | 2012-07-11 | 重庆生竹科技发展有限公司 | Repair method for thin hollow roller |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104388721A (en) * | 2014-10-31 | 2015-03-04 | 浙江恒成硬质合金有限公司 | Process for sintering high-cobalt bound alloy product |
| CN104498684A (en) * | 2015-01-19 | 2015-04-08 | 四川科力特硬质合金股份有限公司 | Decarburization method for hard alloy in vacuum sintering furnace |
| CN104498684B (en) * | 2015-01-19 | 2017-01-25 | 四川科力特硬质合金股份有限公司 | Decarburization method for hard alloy in vacuum sintering furnace |
| CN105127432A (en) * | 2015-09-29 | 2015-12-09 | 浙江恒成硬质合金有限公司 | Preparation method of graded cemented carbide |
| CN111906317A (en) * | 2020-06-16 | 2020-11-10 | 浙江恒成硬质合金有限公司 | Method for making up for defects of tungsten carbide hard alloy product |
| CN111906317B (en) * | 2020-06-16 | 2023-03-24 | 浙江恒成硬质合金有限公司 | Method for making up for defects of tungsten carbide hard alloy product |
| CN111957978A (en) * | 2020-08-19 | 2020-11-20 | 龙泉市陈栋剑铺 | Sword light hammer forging, smelting and repairing process and processing equipment thereof |
| CN114029491A (en) * | 2021-10-22 | 2022-02-11 | 浙江恒成硬质合金有限公司 | Method for repairing inner hole of hard alloy blank |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103695835B (en) | 2015-12-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103695835B (en) | A kind of Hard alloy filler repair technology | |
| CN102409338B (en) | Same-wavelength double-beam narrow-spot laser quick cladding method | |
| CN103182618A (en) | Overlaying manufacture repair technology for roll forging die | |
| CN103993308A (en) | Method for re-manufacturing roller shaft part through laser cladding | |
| CN102950351A (en) | Diffusion brazing manufacture method for hydrogen peroxide thrust chamber body | |
| CN107502889A (en) | A kind of method at precision laser deposited nickel-base alloy powder end | |
| CN112981387A (en) | Method for preparing aluminum oxide reinforced copper-based wear-resistant heat-conducting and electric-conducting coating through laser-assisted low-pressure cold spraying | |
| CN103993309A (en) | Method for re-manufacturing roller through laser | |
| CN102286740A (en) | Method for preparing tungsten copper or molybdenum copper high-voltage contact material through direct forming | |
| CN104087891B (en) | A kind of injection and spraying process prepare method and the device of composite material | |
| CN104372333B (en) | Gas nozzle cold-spraying method capable of repairing corners and special clamping device thereof | |
| CN107805809A (en) | A kind of automobile die surface coating renovation technique | |
| CN104762583A (en) | Preparation method of nanoceramic material for surface of thermal spraying mold | |
| CN100999032B (en) | New technology of valve sealing element vacuum induction pile-up welding hard alloy and improved equipment | |
| CN106011348B (en) | A kind of restorative procedure of copper casting blast-furnace tuyere surface fracture | |
| CN104099608B (en) | The method of Cu-Ag-Zn abradable seal coating is prepared in a kind of cold spraying | |
| CN101758326A (en) | Plasma-arc welding method of cupronickel with thickness of 2-20 mm | |
| CN104046983A (en) | Titanium alloy thin-wall blade laser-cladding low-stress local orientation cooling restoration method | |
| CN101704171A (en) | Ceramic surfacing-welding electrode for restoring ceramic composite steel pipe and surfacing-welding method | |
| CN104404505B (en) | The spraying preparation method of Cu/Mo/Cu composite sheet | |
| CN103212912B (en) | Method for manufacturing nuclear-power-used thrust disc by means of hot isostatic pressing diffusion bonding | |
| CN200963726Y (en) | Thick-steel-plate narrow-clearance deep-groove carbon arc gas gouging torch for removing metal | |
| CN106238492A (en) | A kind of method utilizing recovery ferrum, steel cuttings to prepare composite metal plate | |
| CN109604586B (en) | 3D printing repairing ink material and method suitable for rolled steel | |
| CN112813393B (en) | Molybdenum-nickel alloy target and preparation method thereof |
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 |