Compression sintering and quenching integrated production process for cemented carbides

A pressure sintering and production process technology, applied in the field of cemented carbide production process, can solve the problems of high consumption of inert gas, low product strength, large equipment investment, etc., and achieve the effects of improving production efficiency, reducing energy consumption and reducing production costs

Inactive Publication Date: 2008-10-08
荆门金钻硬质合金有限责任公司
View PDF0 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is exactly for known hard alloy pressure sintering quenching is to be completed by pressure sintering and quenching two processes separately, therefore need two sets of devices, equipment investment is big, working procedure is many, energy consumption is big, inert gas consump

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
  • Compression sintering and quenching integrated production process for cemented carbides

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] The pressure sintering and quenching integrated furnace consists of furnace body 1, heat insulation screen 2, pushing mechanism 3, electric heating element 5, argon gas channel 6, argon gas channel 8, vacuum pressure valve 9, vacuum pressure valve 10, fan housing 11. Fan 12, heat exchanger 13, product boat support box 14, temperature measurement and control thermocouple 15 (see figure 1 ); front and rear doors 1-1 of the furnace body and a rear door 1-2 of the furnace body are respectively arranged at the front and rear ends of the furnace body 1, the thermal insulation screen 2 is installed in the furnace body 1, and the electric heating element 5 is installed in the thermal insulation screen 2 , the product boat bracket box 14 is installed in the furnace body 1, and the front and rear doors 2-1 and 2-2 of the heat insulation screen are respectively provided at the front and rear ends of the heat insulation screen 2, and the pushing mechanism 3 is installed on the furna...

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 relates to a pressure sintering and quenching integrated manufacturing process for the hard alloy. The manufacturing process is characterized in that the manufacturing process comprises the process steps that product charge into furnace, vacuum pumping (0.1 to 350Pa), temperature elevation, compression sintering (the temperature is kept at 1350 to 1600DEG C and the product is sintered for 30 to 100 minutes, and the pressure is up to 1 to 10 MPa), cooling down, heat preservation (1000 to 1300 DEG C, for 0 to 100 minutes), decompression (0.10 to 0.65MPa), quenching, cooling down, pressure relief and furnace tapping. The manufacturing process has the advantages that because the two working procedures of pressure sintering and quenching of the hard alloy are integrated into one working procedure and integrated on one device, the equipment investment can be saved on premise that the product quality is not influenced, thus the energy consumption can be reduced by above one time, the production cycle is shortened by above 4.5 times, the production efficiency is improved by above 4.5 times, the production cost is reduced by above one time, the man power is saved by one time, and the worksite is saved by about one time.

Description

technical field [0001] The invention relates to the field of cemented carbide production technology. Background technique [0002] The sintering technology of cemented carbide mainly includes vacuum sintering and pressure sintering. Since vacuum sintering is in a negative pressure state, during the sintering process, when the structure of the product is densified, there is no external pressure, resulting in incomplete densification and residual pores and pores. There are more, so there are more fracture sources and the material strength is low. Pressure sintering means that during the sintering and densification process of the product, external pressure is applied, the internal structure of the material is denser, and the pores and holes remain less, so the number and size of fracture sources are greatly reduced, and the material strength is significantly improved. The quenching process can transform most of the cobalt phase in the internal structure of the material into a ...

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): C22C1/04C22F1/00B22F3/14
Inventor 陈明吕小军
Owner 荆门金钻硬质合金有限责任公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap