Sintering method of hard alloy die and hard alloy die
A cemented carbide, sintering method technology, applied in other manufacturing equipment/tools, turbines, engine components, etc., can solve problems such as cracking, deformation, pore grain growth, etc.
Active Publication Date: 2021-05-25
晋城富联鸿刃科技有限公司
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003]
However, when the size of the cemented carbide mold is large, there are problems of porosity and uneven grain growth during the sintering process.
In addition, there are defects such as cracking and deformation easily
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0037] In the first step, a carrying container is provided, and a through hole is opened at the bottom of the carrying container.
[0038] In the second step, a blank is prepared by compression molding using tungsten carbide-cobalt (WC-Co) composite powder. Wherein, in the tungsten carbide-cobalt composite powder, the mass ratio of metal cobalt is 15%.
[0039] In the third step, the blank is placed in the carrying container, and the blank is brought into contact with the bottom provided with the through hole.
[0040] The fourth step is to heat the holding container so that the temperature of the holding container is increased to 1380°C (ie, the sintering temperature of the blank), and kept at this sintering temperature (ie 1380°C) for 1 hour, thereby obtaining The cemented carbide mold.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| diameter | aaaaa | aaaaa |
| particle size | aaaaa | aaaaa |
| porosity | aaaaa | aaaaa |
Login to View More
Abstract
The invention provides a sintering method of a hard alloy die. The sintering method comprises the following steps of: preparing a blank by using tungsten carbide-cobalt composite powder; and heating the blank to a sintering temperature, carrying out heat preservation for 1h to 1.5h at the sintering temperature so as to obtain the hard alloy die, wherein the sintering temperature is 1,350 DEG C to 1,400 DEG C. The hard alloy die obtained by sintering through the sintering method is compact in metallographic phase and uniform in crystal grain distribution. The invention further provides the hard alloy die obtained by sintering through the sintering method.
Description
technical field [0001] The invention relates to the field of mold sintering, in particular to a sintering method of a cemented carbide mold and a cemented carbide mold obtained by sintering the sintering method. Background technique [0002] Due to the characteristics of high hardness, good wear resistance, high mechanical strength, good corrosion resistance and small linear expansion coefficient, cemented carbide molds are widely used in the production process of powder metallurgy, which can be used to replace steel molds It is used to produce various steel products and non-ferrous metals. Among them, the elastic modulus of WC-Co cemented carbide is higher than that of steel, and it deviates less under a certain load, which can significantly improve the processing accuracy and reduce the vibration during processing, reduce friction, and prolong the hardness. Alloy mold service life. [0003] However, when the size of the cemented carbide mold is large, there are problems ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): B22F5/00B22F3/10C22C29/08
CPCB22F5/00B22F3/10C22C29/08C22C29/067B22F2005/001
Inventor 孙娜马永岗薛桂全袁晓波王超边伟李尧项凤鸣贺晨晨蒋益民李军旗
Owner 晋城富联鸿刃科技有限公司