Unlock instant, AI-driven research and patent intelligence for your innovation.

Sintering device and preparation method of tungsten alloy material

A sintering device and tungsten alloy technology, applied in the field of powder metallurgy, can solve the problems affecting product size, low product qualification rate, liquid phase extrusion of parts, etc., and achieve uniform and stable mechanical properties, uniform product size standards, and uniform local density. Effect

Inactive Publication Date: 2021-03-16
江苏骏派电子科技有限公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, during the sintering of tungsten and low-melting point metals or alloys, it is very easy to experience liquid phase extrusion in inner corners or specific areas of the part
The extruded liquid phase leads to the lack of binder phase at the sintered part, which not only affects the size of the product, but also causes uneven local density of the product, causing embrittlement of the parts and differences in mechanical properties, so the pass rate of the product is low and often fails. No secondary processing to remove the liquid phase extruded at local parts of the product

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Sintering device and preparation method of tungsten alloy material

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] DETAILED DESCRIPTION OF THE INVENTION A method of preparing a tungsten alloy material comprising a liquid phase sintering step performed by the above-described sintering apparatus. The preparation method of the tungsten alloy material according to the specific embodiment of the present invention includes the step of: (1) mixing tungsten powder with a bonded phase metal powder ingredient, pressed into a blank; (2) placing the blank in the sintering device In the hydrogen furnace, liquid phase sintering is carried out.

[0025] In the above-described sintering apparatus provided in the specific embodiment of the present invention, a plurality of carbon blocks placed to be sintered with a bicycle plate and a carbon block that adjust the elemental material of the present invention together in a capped underburger box, after the addition The underbash cartridge is close to the seal, partially breathable. The underbash box is fed into a temperature controlled and has a continuous...

Embodiment 1-5、 comparative example 1-3

[0035] Examples 1-5 and Comparative Examples 1-3 are employed in the specific embodiment of the present invention (same as the size of the bonding cartridge; the material of the braised box is 95 porcelain oxide ceramic materials; the number of the burning board All are 3 pieces; the same carbon block is set in the Burning box), and the preparation of tungsten alloy materials:

[0036] (1) Mix tungsten powder with a bond phase metal powder ingredient, pressed into a blank; the adhesion phase metal comprises Ni, Fe and CO; the mass content of tungsten powder in the blank is 90%;

[0037] (2) Place the blank in the sintering device, liquid phase sintering in the hydrogen furnace;

[0038] Among them, in the step of liquid phase sintering in the hydrogen furnace: first heat the hydrogen furnace, then heat the liquid phase sintering, then cool the hydrogen furnace, or further natural cooling, and finally remove from the hydrogen furnace Sintering device.

[0039] Examples 1-5 and the hy...

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

No PUM Login to View More

Abstract

The invention belongs to the technical field of powder metallurgy, and particularly relates to a sintering device and a preparation method of a tungsten alloy material. The sintering device provided by the invention comprises a burning bearing box with a cover, wherein the burning bearing box is locally ventilated; a plurality of burning bearing plates are stacked in the burning bearing box, everytwo adjacent burning bearing plates are separated through a supporting block, and the burning bearing plates are used for containing blanks to be sintered; and a carbon block is also arranged in eachburning bearing box. The invention further provides a preparation method of the tungsten alloy material. The preparation method comprises a liquid-phase sintering step performed by adopting the sintering device. According to the preparation method, the wettability between tungsten alloy and a binding phase metal liquid phase can be promoted to be improved, the liquid phase extrusion phenomenon occurring in the sintering process of the tungsten alloy material is effectively inhibited, the prepared tungsten alloy product does not need to be subjected to secondary processing, the product size standard is unified, the local density is uniform, the mechanical property is uniform and stable, and the product percent of pass is remarkably improved.

Description

Technical field [0001] The present invention belongs to the field of powder metallurgy technology, and more particularly to a method of preparing a sintering apparatus and a tungsten alloy material. Background technique [0002] The use of high specific weight tungsten alloys in the mechanical device is a technique of acquisition. Since the melting point of tungsten is high, the sintering degree of pure tungsten powder is large, and therefore, a low-melting metal or alloy is used as a bonding phase to reduce the sintering temperature, and the sintering is quickly completed. [0003] However, in the process of sintering tungsten and low melting point metal or alloy, the inner corner of the part is easily occurring or the liquid phase extrusion occurred. The extruded liquid phase leads to the lack of the bonding phase, which not only affects the size of the product, but also causes the local density of the product to be uneven, the difference in the embrittlement and mechanical pro...

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
no application Login to View More
IPC IPC(8): B22F3/10C22C1/05C22C27/04C22C1/10
CPCB22F3/1035B22F3/003C22C1/058C22C27/04
Inventor 邱耀弘李中杰夏前云
Owner 江苏骏派电子科技有限公司