CN102851522A - Preparation technique of wolfram carbide hard alloy - Google Patents
Preparation technique of wolfram carbide hard alloy Download PDFInfo
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- CN102851522A CN102851522A CN 201210383853 CN201210383853A CN102851522A CN 102851522 A CN102851522 A CN 102851522A CN 201210383853 CN201210383853 CN 201210383853 CN 201210383853 A CN201210383853 A CN 201210383853A CN 102851522 A CN102851522 A CN 102851522A
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Abstract
The invention provides a preparation technique of a wolfram carbide hard alloy, which comprises the following steps: 1) wet grinding: weighing 78.5 wt% of WC, 4 wt% of Co, 3% of Ni, 14 wt% of Fe and 0.5 wt% of Al, putting the raw materials in a ball grinder, and carrying out wet grinding, wherein the ratio of grinding media to material is 1:3; 2) pressing: adding 100ml/Kg plasticizer rubber before pressing to carry out granulation, drying, screening, and pressing on a pressing machine to obtain a pressure blank with certain shape and dimension; 3) vacuum sintering: sintering in a 100Pa vacuum state at the temperature of 1450 DEG C for 8 hours, cooling to 100 DEG C below, and discharging; and 4) surface treatment: carrying out surface treatment by using 30-60-mesh emery, wherein the compressed air pressure is generally 196-392KPa. The wolfram carbide hard alloy prepared by the technique provided by the invention has the advantages of favorable corrosion resistance, and higher hardness and better abrasion resistance as compared with like products.
Description
Technical field
The invention belongs to the Wimet technical field, be specifically related to the preparation technology of carboloy.
Background technology
Have the Wimet of the title of " industrial tooth ", especially Ultra-fine Grained wolfram varbide (WC) Wimet that has high rigidity, high-wearing feature, in the fields such as mechanical workout, mining, be widely used. wherein, WC-Co is the series hard alloy that output is maximum, purposes is the widest.Expensive Co plays a part binding agent in WC-Co, put forward heavy alloyed bending strength, but the existence of Co descends the corrosion resistance nature of WC Wimet, reduces simultaneously its hardness and wear resistance.Binder free WC Wimet is just becoming the important development direction that high wear resistant hard closes.Yet the fusing point of pure WC is up to 2800 ℃, and traditional sintering process is difficult to preparation binder free WC Wimet.The preparation of binder free WC Wimet is to realize by some special high temperature sintering methods, such as spark plasma sintering, microwave sintering, hot isostatic pressing and high-frequency induction thermal sintering etc.But the production cost of these methods is higher, is subject to certain limitation aspect suitability for industrialized production.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, a kind of preparation technology of carboloy is provided.
Realize the preparation technology of the carboloy of the object of the invention, may further comprise the steps: 1) wet-milling: take by weighing each raw material by following mass percent, wherein: WC is 78.5%, Co is that 4%, Ni is that 3%, Fe is 14%, TAL is 0.5%, pack into and carry out wet-milling in the ball mill, the alcohol add-on is 0.15-0.25L/kg, and ratio of grinding media to material is 1:3; Slip after the wet-milling is crossed double-deck 320-400 eye mesh screen, extracts the pure mellow wine essence on upper strata after the precipitation out, carries out drying in the vacuum drier of again slip being packed into, and the vacuum-drying time is 3-4h, and vapor pressure is 0.4MPa; Cross 80 eye mesh screens behind the dry good compound cooling 6h; 2) compacting: before compacting compound is added quantitative binder rubber, add-on is that 100ml/Kg granulates, and drying is sieved, and makes the compound that is fit to different pressing modes; To mix the compound of glue and insert in the mould, and on pressing machine, to powder pressurization, make and have definite shape and size De Ya Pi; 3) vacuum sintering: sintering under the 100Pa vacuum state, sintering temperature are 1450 ℃, and sintering time is 8h, are cooled to below 100 ℃ and unload stove; 4) surface treatment: adopt 30～60 order emergies, compressed air pressure is generally 196～392Kpa.
Beneficial effect of the present invention is as follows: adopt the carboloy of technique preparation of the present invention to have good erosion resistance, and more excellent with like product its hardness of comparison and wear resisting property.
Embodiment
Embodiments of the invention are as follows.
1, take by weighing each raw material: wherein: WC is that 78.5%, Co is that 4%, Ni is that 3%, Fe is that 14%, TAL is 0.5%.
2, wet-milling: carry out wet-milling in the ball mill of packing into, the alcohol add-on is 0.15-0.25L/kg, and ratio of grinding media to material is 1:3; Slip after the wet-milling is crossed double-deck 320-400 eye mesh screen, extracts the pure mellow wine essence on upper strata after the precipitation out, carries out drying in the vacuum drier of again slip being packed into, and the vacuum-drying time is 3-4h, and vapor pressure is 0.4MPa; Cross 80 eye mesh screens behind the dry good compound cooling 6h.
3, compacting: before compacting compound is added quantitative binder rubber, add-on is that 100ml/Kg granulates, and drying is sieved, and makes the compound that is fit to different pressing modes; To mix the compound of glue and insert in the mould, and on pressing machine, to powder pressurization, make and have definite shape and size De Ya Pi.
4, vacuum sintering: sintering under the 100Pa vacuum state, sintering temperature are 1450 ℃, and sintering time is 8h, are cooled to below 100 ℃ and unload stove.
5, surface treatment: adopt 30～60 order emergies, compressed air pressure is generally 196～392Kpa.
Adopt the alloy parameter of technique preparation of the present invention to be: HRA 〉=86.5; σ 〉=2800N/mm
2Density is 12.9g/cm
3Co magnetic is 22.5; Magnetic force is 9.0, and These parameters far surpasses the existing technique of employing and prepares the Wimet index.
Embodiment recited above is described preferred implementation of the present invention; be not that scope of the present invention is limited; design under the spiritual prerequisite not breaking away from the present invention; various distortion and improvement that the common engineering technical personnel in this area make technical solution of the present invention all should fall in the definite protection domain of claims of the present invention.
Claims (2)
1. the preparation technology of a carboloy is characterized in that, comprises the steps:
1) wet-milling: take by weighing each raw material by following mass percent, wherein: WC is that 78.5%, Co is that 4%, Ni is that 3%, Fe is that 14%, Al is 0.5%, carries out wet-milling in the ball mill of packing into, and ratio of grinding media to material is 1:3; Slip after the wet-milling is crossed double-deck 320-400 eye mesh screen, extracts the pure mellow wine essence on upper strata after the precipitation out, carries out drying in the vacuum drier of again slip being packed into, and the vacuum-drying time is 3-4h, and vapor pressure is 0.4MPa; Cross 80 eye mesh screens behind the dry good compound cooling 6h;
2) compacting: before compacting compound is added quantitative binder rubber, add-on is that 100ml/Kg granulates, and drying is sieved, and makes the compound that is fit to different pressing modes; To mix the compound of glue and insert in the mould, and on pressing machine, to powder pressurization, make and have definite shape and size De Ya Pi;
3) vacuum sintering: sintering under the 100Pa vacuum state, sintering temperature are 1450 ℃, and sintering time is 8h, are cooled to below 100 ℃ and unload stove;
4) surface treatment: adopt 30～60 order emergies, compressed air pressure is generally 196～392Kpa.
2. the preparation technology of a kind of carboloy according to claim 1 is characterized in that, described 1) the alcohol add-on is 0.15-0.25L/kg in the step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210383853 CN102851522A (en) | 2012-10-11 | 2012-10-11 | Preparation technique of wolfram carbide hard alloy |
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| CN 201210383853 CN102851522A (en) | 2012-10-11 | 2012-10-11 | Preparation technique of wolfram carbide hard alloy |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105921757A (en) * | 2016-04-28 | 2016-09-07 | 江西耀升钨业股份有限公司 | Production technology capable of rapidly processing carbide tipped cutting tools |
| CN106399796A (en) * | 2016-12-15 | 2017-02-15 | 浙江鸿峰硬质合金有限公司 | Hard alloy as well as preparation method thereof and alloy tool bit |
| CN106756394A (en) * | 2017-01-09 | 2017-05-31 | 株洲精特硬质合金有限公司 | Super abrasive high rigidity carbide drill material and preparation method thereof |
| CN106756411A (en) * | 2017-01-24 | 2017-05-31 | 株洲精特硬质合金有限公司 | High duty metal ceramics and preparation method thereof for cutting non-ferrous metal piece |
| CN107686925A (en) * | 2017-09-18 | 2018-02-13 | 张家港钻通设备有限公司 | A kind of drill bit Hardmetal materials |
| CN108085556A (en) * | 2017-12-21 | 2018-05-29 | 洛阳名力科技开发有限公司 | A kind of preparation method of WC-Fe-Ni-Co hard alloy |
| CN110202126A (en) * | 2019-05-10 | 2019-09-06 | 四川铭泰顺硬质合金有限公司 | Glue granulating process is mixed in a kind of preparation of hard alloy |
| CN111826569A (en) * | 2020-07-21 | 2020-10-27 | 广东正信硬质材料技术研发有限公司 | Wear-resistant high-hardness hard alloy drilling tool and preparation method thereof |
-
2012
- 2012-10-11 CN CN 201210383853 patent/CN102851522A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105921757A (en) * | 2016-04-28 | 2016-09-07 | 江西耀升钨业股份有限公司 | Production technology capable of rapidly processing carbide tipped cutting tools |
| CN105921757B (en) * | 2016-04-28 | 2017-11-10 | 江西耀升钨业股份有限公司 | Can rapid processing hard alloy knife bar production technology |
| CN106399796A (en) * | 2016-12-15 | 2017-02-15 | 浙江鸿峰硬质合金有限公司 | Hard alloy as well as preparation method thereof and alloy tool bit |
| CN106399796B (en) * | 2016-12-15 | 2018-05-18 | 浙江鸿峰硬质合金有限公司 | A kind of hard alloy and preparation method thereof and alloy cutter head |
| CN106756394A (en) * | 2017-01-09 | 2017-05-31 | 株洲精特硬质合金有限公司 | Super abrasive high rigidity carbide drill material and preparation method thereof |
| CN106756411A (en) * | 2017-01-24 | 2017-05-31 | 株洲精特硬质合金有限公司 | High duty metal ceramics and preparation method thereof for cutting non-ferrous metal piece |
| CN107686925A (en) * | 2017-09-18 | 2018-02-13 | 张家港钻通设备有限公司 | A kind of drill bit Hardmetal materials |
| CN108085556A (en) * | 2017-12-21 | 2018-05-29 | 洛阳名力科技开发有限公司 | A kind of preparation method of WC-Fe-Ni-Co hard alloy |
| CN110202126A (en) * | 2019-05-10 | 2019-09-06 | 四川铭泰顺硬质合金有限公司 | Glue granulating process is mixed in a kind of preparation of hard alloy |
| CN111826569A (en) * | 2020-07-21 | 2020-10-27 | 广东正信硬质材料技术研发有限公司 | Wear-resistant high-hardness hard alloy drilling tool and preparation method thereof |
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Application publication date: 20130102 |