CN1108351C - Forming agent for producing hard alloy - Google Patents
Forming agent for producing hard alloy Download PDFInfo
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- CN1108351C CN1108351C CN00113640A CN00113640A CN1108351C CN 1108351 C CN1108351 C CN 1108351C CN 00113640 A CN00113640 A CN 00113640A CN 00113640 A CN00113640 A CN 00113640A CN 1108351 C CN1108351 C CN 1108351C
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- forming agent
- styrene
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- rubber
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Abstract
The present invention discloses a new forming agent for preparing hard alloy. The present invention is characterized in that the forming agent is prepared from 7 to 8 portions by weight of styrene-butadiene-styrene, 7 to 8 portions by weight of polypentadiene, 5 to 6 portions by weight of cis-1, 4-polybutadiene rubber, 2 to 3 portions by weight of terpene resin and 79 to 75 portions by weight of solvent naphtha. Compared with a rubber forming agent, the forming agent of the present invention has the advantages of favorable binding property, high green strength, difficult ageing, no contamination of an alloy product, favorable granulating property, etc.
Description
The present invention relates to a kind of forming agent that is used to produce Wimet, belong to chemical field.
At present, the forming agent that CEMENTED CARBIDE PRODUCTION adopts mainly is sodium butadiene rubber, paraffin, polyoxyethylene glycol (PEG), begins to use in a large number styrene-butadiene-styrene (SBS) to do forming agent in recent years again.The sodium butadiene rubber formability is better, but main drawback is the residual carbon height, can not adopt the high-carbon wolfram varbide, reduces alloy toughness; The wax moulding agent does not have residual carbon, but compact strength is low, the difficult control of carbon amount, easy dirtyization; PEG forming agent performance is between rubber and paraffin, but because moisture absorption is serious, range of application is narrow, only is suitable for spraying drying.
The object of the present invention is to provide a kind of novel being used to produce the forming agent of Wimet (SBP), to overcome above-mentioned shortcoming.
The present invention is used to produce the forming agent of Wimet, it is characterized in that it is mixed by component styrene-butadiene-styrene, polyisoprene, cis-1,4-polybutadiene rubber, terpine resin, industrial naptha to form, and the weight proportion of each component is as follows:
Styrene-butadiene-styrene 7-8 part
Polyisoprene 7-8 part
Cis-1,4-polybutadiene rubber 5-6 part
Terpine resin 2-3 part
Industrial naptha 79-75 part
The present invention compares with the rubber-moulding agent has following advantage:
1, cohesiveness is extremely strong, and the compact strength height can not cause dirtyization of alloy product.
2, the SBP forming agent is difficult for wearing out, even deposit half a year, also can not lump, wear out.
3, the performance of sieving is good, and the SBP material is soaked with screen overflow when sieving, and the screen overflow of rubber mass is about 2～4%, can save material like this, reduces cost.
4, the forming agent pellet performance is good, and the garden tube is granulated to test and shown that the granulation time of SBP forming agent is short, and granulating efficiency obviously is better than rubber mass, pellet form homogeneity, and flowabilities etc. can be compared with the paraffin spraying material.
5, the mixing of forming agent, compacting, false add overhaul period shorten dramatically, and compare with traditional rubber process, and SBP technology does not need primary drying, and the exsiccant time only is 10-15 minute for the second time; The granulation time shortens dramatically, and even need not granulate to obtain the granule performance better than rubber process.The pressed compact of SBP technology does not need drying can carry out the false add inspection, and the rubber process pressed compact generally needs 24-48 hour drying.
The These characteristics of SBP technology has reduced labour intensity, has shortened the production cycle, has reduced the drying plant investment, has saved the steam energy, helps carrying out technology controlling and process and reduces cost.
By two trade mark compounds of YT5, YT15 being added SBP respectively and rubber is crossed 40 mesh sieves and 60 mesh sieves, carry out the compact strength test, draw one group of data such as table 1:
Table 1: compact strength test unit: gram
As can be seen from Table 1, the compact strength of SBP forming agent exceeds 1-3 doubly than the rubber-moulding agent, illustrates that SBP has fabulous wettability to compound, and creep property is good during compression moulding, thereby the compact strength height.
YT5, YT15 performance comparison are listed in table 2
Table 2 YT5, the contrast of YT15 granule performance
As known from Table 2, the homogeneity of SBP material, mobile and loose density all is better than rubber mass, thereby the pressed compact size substance of SBP material is better than the reproducibility of rubber mass.
Below in conjunction with embodiment the present invention is described in further detail.
Example 1:
With weight proportion is that 7 parts of styrene-butadiene-styrenes, 7 parts of polyisoprene, 5 parts of cis-1,4-polybutadiene rubbers, 2 parts of terpine resins are dissolved in 79 parts of No. 120 industrial napthas, mixes and stirs 10 hours after 320 eye mesh screens sieve, and screen underflow is the SBP forming agent.
Example 2:
With weight proportion is 8 parts of styrene-butadiene-styrenes, and 8 parts of polyisoprene, 6 parts of cis-1,4-polybutadiene rubbers, 3 parts of terpine resins are dissolved in 75 parts of No. 120 industrial napthas, mixes to stir after 15 hours and sieves through 320 eye mesh screens, and screen underflow is the SBP forming agent.
Claims (1)
1, a kind of forming agent that is used to produce Wimet is characterized in that it is mixed by component styrene butadiene one vinylbenzene, polyisoprene, cis-1,4-polybutadiene rubber, terpine resin, industrial naptha to form, and the weight proportion of each component is as follows:
Styrene-butadiene-styrene 7-8 part
Polyisoprene 7-8 part
Cis-1,4-polybutadiene rubber 5-6 part
Terpine resin 2-3 part
Industrial naptha 79-75 part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00113640A CN1108351C (en) | 2000-08-24 | 2000-08-24 | Forming agent for producing hard alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00113640A CN1108351C (en) | 2000-08-24 | 2000-08-24 | Forming agent for producing hard alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1281882A CN1281882A (en) | 2001-01-31 |
| CN1108351C true CN1108351C (en) | 2003-05-14 |
Family
ID=4583406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00113640A Expired - Fee Related CN1108351C (en) | 2000-08-24 | 2000-08-24 | Forming agent for producing hard alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1108351C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100369700C (en) * | 2005-12-22 | 2008-02-20 | 株洲钻石切削刀具股份有限公司 | Plasticizer for carbide alloy production |
| 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 |
| CN109971395A (en) * | 2019-02-20 | 2019-07-05 | 安徽吉川科技有限公司 | A kind of aluminum weld seam sealing material and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2066310A1 (en) * | 1991-04-22 | 1992-10-23 | Masahiro Murakami | Powder mixture for powder metallurgy and binder therefor |
| EP0550820A2 (en) * | 1991-11-22 | 1993-07-14 | The Lubrizol Corporation | Methods for preparing sintered shapes and compositions used therein |
| CN1075904A (en) * | 1992-03-04 | 1993-09-08 | 株式会社神户制钢所 | The binding agent that is used for the powder mixture of powder metallurgy and uses for this reason |
-
2000
- 2000-08-24 CN CN00113640A patent/CN1108351C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2066310A1 (en) * | 1991-04-22 | 1992-10-23 | Masahiro Murakami | Powder mixture for powder metallurgy and binder therefor |
| EP0550820A2 (en) * | 1991-11-22 | 1993-07-14 | The Lubrizol Corporation | Methods for preparing sintered shapes and compositions used therein |
| CN1075904A (en) * | 1992-03-04 | 1993-09-08 | 株式会社神户制钢所 | The binding agent that is used for the powder mixture of powder metallurgy and uses for this reason |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1281882A (en) | 2001-01-31 |
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