Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Improved structure of powder metallurgy die

A powder metallurgy and mold technology, which is applied in the field of powder metallurgy mold improvement structure, can solve the problems affecting the quality of green compact products, uneven heating temperature, complex heating structure, etc., and achieves constant controllable range, fast heating speed, and simple mold structure. Effect

Inactive Publication Date: 2013-02-13
殷逢宝
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The invention designs an improved structure of a powder metallurgy mold, which solves the technical problems of (1) the heating structure of the existing powder metallurgy mold is complicated, the heating temperature is uneven, the thermal conductivity is low, and the mold base is deformed due to uneven heating; (2) When the compact in the existing powder metallurgy forming die is released from the mold, the residual stress will cause cracks in the compact, which seriously affects the quality of the compact

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
  • Improved structure of powder metallurgy die
  • Improved structure of powder metallurgy die
  • Improved structure of powder metallurgy die

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] Combine below Figure 5 , the present invention is further described:

[0038] Such as Figure 5 As shown, the improved structure of the powder metallurgy mold of the present invention includes a female mold casing 11 and a female mold core 12, and the female mold casing 11 and the female mold core 12 are in interference fit. A spiral oil groove 13 is arranged on the annular inner surface of the female mold outer casing 11, and the spiral oil groove 13 forms a thermal oil circuit with the externally connected temperature-controllable thermal oil.

[0039] The hot oil circuit also includes an oil inlet nozzle 14, an oil inlet pipeline 16, an oil outlet nozzle 15 and an oil outlet pipeline 17. The oil inlet pipeline 16 communicates with the helical oil groove 13 at the highest position. The oil outlet pipeline 17 communicates with the spiral oil groove 13 at the lowest position.

[0040] It works as follows:

[0041] The externally connected temperature-controllable ...

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 an improved structure of a powder metallurgy die, which comprises a female die jacket (11) and a female die core (12), wherein the female die jacket (11) is arranged on the female die core (12) in a sleeving manner to form an integral structure; and a helical oil groove (13) is formed in the annular inside surface of the female die jacket (11) and forms a hot oil loop with externally-connected temperature-controllable hot oil. The improved structure of the powder metallurgy die is characterized in that a demolding guide angle (beta) is formed in an opening of the female die core (12). The improved structure of the powder metallurgy die has the beneficial effects that as the demolding guide angle is formed at the opening of the female die core (12), the great shearing force generated by elastic release in the process of demolding a blank out of the die can be reduced through the demolding guide angle; and the shearing force is a main reason for leading the blank to generate a transverse crack, so that a green blank is protected against crack.

Description

technical field [0001] The invention relates to a powder metallurgy mold, in particular to an improved structure of a powder metallurgy mold. Background technique [0002] Powder metallurgy is a processing method for producing metal powder and making a mixture of metal powder or non-metal powder into products through molding and sintering processes. It can not only produce special materials that are difficult to produce by ordinary smelting methods, but also manufacture various Precise mechanical parts, saving labor and materials. [0003] In order for the mold to heat the raw materials in the cavity of the powder metallurgy mold, or to control the temperature, it is necessary to heat or control the temperature of the powder metallurgy mold. So far, there are two main methods of mold heating in the powder metallurgy industry: the heating method using heating rods or electromagnetic induction heating and the heating method using hot oil jackets. [0004] Specifically, the f...

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
Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/03
Inventor 殷逢宝
Owner 殷逢宝
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com