CN1182931C - Forming agent for hard alloy production - Google Patents
Forming agent for hard alloy production Download PDFInfo
- Publication number
- CN1182931C CN1182931C CNB031245617A CN03124561A CN1182931C CN 1182931 C CN1182931 C CN 1182931C CN B031245617 A CNB031245617 A CN B031245617A CN 03124561 A CN03124561 A CN 03124561A CN 1182931 C CN1182931 C CN 1182931C
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- CN
- China
- Prior art keywords
- forming agent
- styrene
- isoprene
- dibutyl phthalate
- phenylethene
- 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.)
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Abstract
The present invention discloses a forming agent for producing hard alloy, which is composed of, by weight percentage, 8 to 12% of styrene-isoprene-styrene polymer, 5 to 3% of terpene resin, 5 to 3% of dibutyl phthalate, 32 to 17% of ethyl acetate, and 50 to 65% of solvent naphtha. With the forming agent of the present invention, the apparent density fluctuation of mixture powder is small, both the flowability and the formability are good, the bonding strength of compaction is high, the amount of residual coal of finished goods is low, the efficiency of compaction is high, and the precision of finished goods is high.
Description
Technical field
The present invention relates to a kind of forming agent that powder metallurgy is produced that is used for, in particular for the forming agent of CEMENTED CARBIDE PRODUCTION.
Background technology
In the CEMENTED CARBIDE PRODUCTION process, for making powder pressing forming, prepare the product of different shape, must add a certain amount of forming agent, the forming agent that adopts mainly contains paraffin, cis-1,4-polybutadiene rubber, sodium butadiene rubber, polyoxyethylene glycol (PEG) at present. and styrene-butadiene-styrene (SBS).The wax moulding agent does not have residual carbon, but compact strength is low, the difficult control of carbon amount, easy dirtyization; The sodium butadiene rubber formability is better, but the residual carbon height has reduced alloy toughness, and can not adopt high-carbon WC is powder stock; Cis-1,4-polybutadiene rubber has adhesive property preferably, but relatively poor to the powder wetting property, makes to mix inhomogeneous, the difficulty of granulating of glue, and compound flows the property difference and makes that compacting efficient is low, finished product accuracy is low; The PEG processability is between paraffin and rubber, but range of application is narrow, only is suitable for spraying drying; SBS forming agent good moldability, but residual carbon height.
Summary of the invention
The present invention is directed to above-mentioned deficiency, be to provide that a kind of residual carbon amount is low, the apparent density of powder fluctuation is little, flowability and good moldability, forming agent that the pressed compact bonding strength is high, be used for CEMENTED CARBIDE PRODUCTION, compacting efficient height, finished product accuracy height.
Forming agent of the present invention is that the styrene-isoprene-phenylethene polymer of 8-12%, the terpine resin of 5-3%, the dibutyl phthalate of 5-3%, the ethyl acetate of 32-17% and the industrial naptha of 50-65% are formed by weight percent.
With above-mentioned forming agent by a certain percentage, join in the cemented carbide powder powder stock, mix, and drying, wiping sieve, granulate, prepare compound; Be pressed again, sintering, obtain hart metal product.
With the YG11C-N powder stock is example, uses above-mentioned new forming agent and cis-1,4-polybutadiene rubber as forming agent respectively, produces required hart metal product.Through multiple batches of random sampling, detect the loose density and the flowing property of compound with the Hall under meter, the substance and the size of pressed compact are measured respectively, and to the detection of product residue carbon amount, data see the following form:
Adopt new forming agent of the present invention as can be known by data in the table, the carbide alloy mixture loose density is big and fluctuate little, good flowing properties makes that the moulding pressed density is good, bonding strength is high, and pressing speed improves 50%, sintering finished residual carbon amount is low, and dimensional precision is high and stable.
Embodiment
The invention will be further described below in conjunction with example.
Embodiment 1: with weight percent be 8% solid-state styrene-isoprene-phenylethene polymer, 5% solid-state terpine resin, 5% liquid dibutyl phthalate, 32% liquid acetic acid ethyl ester and 50% the 120# industrial naptha at normal temperatures, mix in the encloses container, fully dissolve to styrene-isoprene-phenylethene polymer, terpine resin, promptly get new forming agent of the present invention.
Embodiment 2: with weight percent be 12% solid-state styrene-isoprene-phenylethene polymer, 3% solid-state terpine resin, 3% liquid dibutyl phthalate, 17% liquid acetic acid ethyl ester and 65% the 120# industrial naptha at normal temperatures, mix in the encloses container, fully dissolve to styrene-isoprene-phenylethene polymer, terpine resin, promptly get new forming agent of the present invention.
Embodiment 3: with weight percent be 10% solid-state styrene-isoprene-phenylethene polymer, 4% solid-state terpine resin, 4% liquid dibutyl phthalate, 22% liquid acetic acid ethyl ester and 60% the 120# industrial naptha at normal temperatures, mix in the encloses container, fully dissolve to styrene-isoprene-phenylethene polymer, terpine resin, promptly get new forming agent of the present invention.
Embodiment 4: with weight percent be 10% solid-state styrene-isoprene-phenylethene polymer, 5% solid-state terpine resin, 3% liquid dibutyl phthalate, 20% liquid acetic acid ethyl ester and 62% the 120# industrial naptha at normal temperatures, mix in the encloses container, fully dissolve to styrene-isoprene-phenylethene polymer, terpine resin, promptly get new forming agent of the present invention.
Claims (5)
1, a kind of forming agent that is used for CEMENTED CARBIDE PRODUCTION is that the styrene-isoprene-phenylethene polymer of 8-12%, the terpine resin of 5-3%, the dibutyl phthalate of 5-3%, the ethyl acetate of 32-17% and the industrial naptha of 50-65% are formed by weight percent.
2, forming agent as claimed in claim 1 is characterized in that: the polymeric weight percent of styrene-isoprene-phenylethene is 8%, terpine resin is 5%, dibutyl phthalate is 5%, ethyl acetate is 32%, industrial naptha is 50%.
3, forming agent as claimed in claim 1 is characterized in that: the polymeric weight percent of styrene-isoprene-phenylethene is 12%, terpine resin is 3%, dibutyl phthalate is 3%, ethyl acetate is 17%, industrial naptha is 65%.
4, forming agent as claimed in claim 1 is characterized in that: the polymeric weight percent of styrene-isoprene-phenylethene is 10%, terpine resin is 4%, dibutyl phthalate is 4%, ethyl acetate is 22%, industrial naptha is 60%.
5, forming agent as claimed in claim 1 is characterized in that: the polymeric weight percent of styrene-isoprene-phenylethene is 10%, terpine resin is 5%, dibutyl phthalate is 3%, ethyl acetate is 20%, industrial naptha is 62%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031245617A CN1182931C (en) | 2003-06-18 | 2003-06-18 | Forming agent for hard alloy production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031245617A CN1182931C (en) | 2003-06-18 | 2003-06-18 | Forming agent for hard alloy production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1470346A CN1470346A (en) | 2004-01-28 |
| CN1182931C true CN1182931C (en) | 2005-01-05 |
Family
ID=34152872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031245617A Expired - Fee Related CN1182931C (en) | 2003-06-18 | 2003-06-18 | Forming agent for hard alloy production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1182931C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101108954B (en) * | 2007-08-10 | 2010-08-11 | 株洲精工硬质合金有限公司 | Hard metal complex plasticizer and method of manufacturing the same and method of use thereof |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100441343C (en) * | 2006-04-28 | 2008-12-10 | 龙岩市华锐硬质合金工具有限公司 | Hard alloy vacuum extrusion molding agent and its prepn process |
| CN102719690B (en) * | 2011-03-30 | 2014-07-02 | 厦门钨业股份有限公司 | High-viscosity extrusion forming agent |
| CN102925726B (en) * | 2012-10-31 | 2015-01-28 | 株洲欣荣硬质合金有限公司 | Hard alloy forming agent and perpetration method thereof |
| CN105499557A (en) * | 2016-01-28 | 2016-04-20 | 河南中硬合金有限公司 | Hard alloy large-product holding-up hammer multi-component forming agent and preparation method |
| CN106825543B (en) * | 2017-01-22 | 2018-12-04 | 苏州新锐合金工具股份有限公司 | A kind of hard alloy forming agent |
-
2003
- 2003-06-18 CN CNB031245617A patent/CN1182931C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101108954B (en) * | 2007-08-10 | 2010-08-11 | 株洲精工硬质合金有限公司 | Hard metal complex plasticizer and method of manufacturing the same and method of use thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1470346A (en) | 2004-01-28 |
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| CF01 | Termination of patent right due to non-payment of annual fee |