CN103008666A - Production technique for hard alloy cold heading die - Google Patents
Production technique for hard alloy cold heading die Download PDFInfo
- Publication number
- CN103008666A CN103008666A CN201210577513XA CN201210577513A CN103008666A CN 103008666 A CN103008666 A CN 103008666A CN 201210577513X A CN201210577513X A CN 201210577513XA CN 201210577513 A CN201210577513 A CN 201210577513A CN 103008666 A CN103008666 A CN 103008666A
- Authority
- CN
- China
- Prior art keywords
- ball milling
- alloy cold
- cold heading
- heading die
- hard alloy
- 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.)
- Pending
Links
Landscapes
- Powder Metallurgy (AREA)
Abstract
The invention discloses a ball milling technique for a hard alloy cold heading die. A ball milling technical process for producing the hard alloy cold heading die comprises the following steps of: placing materials and alloying pellets into a ball mill for performing rolling ball milling for 23-28 hours by adopting a dry ball milling way without adding any ethanol, adding paraffin into a milled material, and performing press molding; and performing secondary sintering on a molding blank in a low-pressure furnace, wherein a primary sintering temperature is 1,290-1,330 DEG C, and the secondary sintering temperature is 1,370-1,450 DEG C. The ball milling technique has the positive effects that the hard alloy cold heading die made by adopting a novel technique has higher toughness and higher bending strength, and is lower in production cost.
Description
Technical field
The present invention relates to the technical field that sintered-carbide die is manufactured, relate in particular to a kind of carbide alloy cold heading die manufacturing technique method.
Background technology
Market is in great demand to cold heading die, in the technical process of original production sintered carbide die, the ball-milling technology technology that adopts, and in this road technology operation, the ethanol that all will add is more or less processed, and the process of the pure dry type ball milling method that designs through opening one's minds yet there are no report.Other original sintering method, cause the cold heading die distortion to become waste product because cobalt content is high, the cold heading die qualification rate that particularly ratio of height to diameter is large only has about 50%, and the external diameter concentricity of product is poor, just can reach requirement through centreless grinding or peripheral milling processing, this just causes material loss, increase of investment.
Summary of the invention
The objective of the invention is to disclose a kind of manufacturing technique method of carbide alloy cold heading die, to reach the purpose of enhancing product performance.Its concrete innovative technology practice is: a kind of ball-milling technology method of carbide alloy cold heading die, in the ball-milling technology process of producing the carbide alloy cold-heading, what adopt is the dry type ball milling method, do not add ethanol, material and alloying pellet were placed in the ball mill rolling ball milling 23～28 hours, and it is compressing again that the material that grinds adds paraffin; Sintering at twice after the moulding, sintering temperature is lower in the low-pressure stove for the first time, at 1290～1330 degrees centigrade, sintering in the low pressure stove for the second time, sintering temperature is at 1370～1450 degrees centigrade.Be to turn sintering around for the second time, and be embedded in sintering in the aluminium oxide, effectively prevent lower of alloy cobalt.
The good effect that the present invention produces: the carbide alloy cold upsetting die of car that adopts this new process to make, its toughness, bending strength improve, and production cost reduces.
The specific embodiment
In implementing this technical scheme, the ball-milling technology of used processing technology link, be the mode of the pure dry type ball milling that adopts, namely do not add the ethanol that old-fashioned method must add, material and alloying pellet put into rolling ball milling reaches 24 hours in the ball mill, alloying pellet is 4 to 1 with weight of material percentage, 6～8 millimeters of alloying pellet diameters.And then the material that will grind is added into paraffin and is mixed and made into compound, compressing again, and in the low pressure stove through double sintering production, once sintered temperature is 1290～1330 degrees centigrade, double sintering stove furnace temperature is 1370～1450 degrees centigrade, this is for the second time for turning sintering around, and is embedded in sintering in the aluminium oxide.Adopt the carbide alloy cold heading die of this explained hereafter, its metallographic structure major part is spherical, a small amount of polygon that is, and toughness of products greatly improves, and bending strength reaches 3200KN/m
2More than.And the whole deviation of product can be controlled in 0.2 millimeter.
Claims (1)
1. the ball-milling technology method of a carbide alloy cold heading die, it is characterized in that: in the ball-milling technology process of producing the carbide alloy cold-heading, what adopt is the dry type ball milling method, do not add ethanol, material and alloying pellet were placed in the ball mill rolling ball milling 23～28 hours, and it is compressing again that the material that grinds adds paraffin; Shaping block is twice sintering in the low pressure stove, and the first sintering temperature is 1290～1330 degrees centigrade, and sintering temperature is at 1370～1450 degrees centigrade for the second time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210577513XA CN103008666A (en) | 2012-12-27 | 2012-12-27 | Production technique for hard alloy cold heading die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210577513XA CN103008666A (en) | 2012-12-27 | 2012-12-27 | Production technique for hard alloy cold heading die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103008666A true CN103008666A (en) | 2013-04-03 |
Family
ID=47958079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210577513XA Pending CN103008666A (en) | 2012-12-27 | 2012-12-27 | Production technique for hard alloy cold heading die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103008666A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004263294A (en) * | 2003-02-13 | 2004-09-24 | Mitsubishi Steel Mfg Co Ltd | Alloy steel powder having improved sintering property for metal injection molding and sintered body |
| CN1804067A (en) * | 2006-01-17 | 2006-07-19 | 武汉理工大学 | Preparation process of tungsten carbide/inhibitor composite powder and superfine hard alloy thereof |
| EP1749601A1 (en) * | 2005-07-29 | 2007-02-07 | Sandvik Intellectual Property AB | Method of making a submicron cemented carbide powder mixture with low compacting pressure |
| CN101209495A (en) * | 2007-12-24 | 2008-07-02 | 中国石油大学(华东) | Sintered neodymium-ferrum-boron ball mill hydrogenation preparation method |
| CN101462163A (en) * | 2009-01-16 | 2009-06-24 | 江西稀有稀土金属钨业集团有限公司 | Ball mill technique for preparing carbide alloy mixture |
| CN101892410A (en) * | 2010-07-30 | 2010-11-24 | 赣县世瑞新材料有限公司 | Novel hard alloy production process |
-
2012
- 2012-12-27 CN CN201210577513XA patent/CN103008666A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004263294A (en) * | 2003-02-13 | 2004-09-24 | Mitsubishi Steel Mfg Co Ltd | Alloy steel powder having improved sintering property for metal injection molding and sintered body |
| EP1749601A1 (en) * | 2005-07-29 | 2007-02-07 | Sandvik Intellectual Property AB | Method of making a submicron cemented carbide powder mixture with low compacting pressure |
| CN1804067A (en) * | 2006-01-17 | 2006-07-19 | 武汉理工大学 | Preparation process of tungsten carbide/inhibitor composite powder and superfine hard alloy thereof |
| CN101209495A (en) * | 2007-12-24 | 2008-07-02 | 中国石油大学(华东) | Sintered neodymium-ferrum-boron ball mill hydrogenation preparation method |
| CN101462163A (en) * | 2009-01-16 | 2009-06-24 | 江西稀有稀土金属钨业集团有限公司 | Ball mill technique for preparing carbide alloy mixture |
| CN101892410A (en) * | 2010-07-30 | 2010-11-24 | 赣县世瑞新材料有限公司 | Novel hard alloy production process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101934373B (en) | Process for preparing titanium and titanium alloy from titanium hydride powder | |
| CN102310310B (en) | Composite machining process for inner and outer rings of narrow-series thin-walled high-precision conical thin-walled bearings | |
| CN102240774B (en) | Fine forging forming method of spiral bevel gears | |
| CN110358941B (en) | Tungsten-based alloy material and preparation method thereof | |
| CN103028730B (en) | Powder metallurgy preparation method of valve clack of membrane valve | |
| CN104313281A (en) | Process for producing high-nodularity fastener wire rod | |
| CN102179669A (en) | Process for forging planet carrier | |
| CN102773482B (en) | Method for manufacturing butterfly valve rod by powder metallurgy | |
| CN101643862A (en) | Preparation method of nanometer rare earth oxide-doped molybdenum alloy plate | |
| CN104084589B (en) | A kind of powder metallurgy automobile hub-bearing unit | |
| CN104014795A (en) | Rotary forging die for manufacturing iron-copper bi-metal sealing nut and manufacturing method of iron-copper bi-metal sealing nut | |
| CN107236890A (en) | A kind of concrete pump truck cheater plate and cut ring new material and preparation method thereof | |
| CN105132799A (en) | Powder metallurgy material for unilateral bearing and preparing method of powder metallurgy material | |
| CN103008666A (en) | Production technique for hard alloy cold heading die | |
| CN202803333U (en) | Grinding rod for novel ball grinding mill | |
| CN101967554A (en) | Method for pre-treating iron ore concentrates | |
| CN102773485B (en) | Method for manufacturing check valve core by powder metallurgy | |
| CN102990066B (en) | Powder metallurgy forming and preparation method of valve rod of diaphragm valve | |
| CN203863025U (en) | Rocking-rolling mold for making iron-copper dual-metal sealing nut | |
| CN102744411B (en) | Automobile clutch flange plate based on scrap steel powder sintered copper-bearing steel and production method of automobile clutch flange plate | |
| CN101349293B (en) | Hydraulic motor valve disc and preparation method thereof | |
| CN103846618A (en) | Manufacturing method for top blank of perforating machine | |
| CN205629254U (en) | Modular easy steel ball back taper cold -heading mould of changing | |
| CN111375724A (en) | Manufacturing method of end socket with boss | |
| CN102941346A (en) | Preparation method of powder metallurgy forming of multi-way valve body |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130403 |