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

Cemented carbides big product aging treatment process

A technology of aging treatment and cemented carbide, which is applied in the field of cemented carbide aging treatment technology, can solve the problems of difficult control of the treatment process, high cost, and long treatment time, and achieve the effects of simple operation, improved bending strength and stress relief

Active Publication Date: 2010-10-13
ZHUZHOU HARD ALLOY GRP CO LTD
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is exactly in order to overcome the technical defects such as long processing time, high cost, and difficult control of the treatment process in the above four kinds of cemented carbide aging treatment technologies. On the basis of systematic research on the cemented carbide aging treatment mechanism, a Adding a certain proportion of soda ash to boiling water as a heating medium is a new process for aging treatment of hard alloys, especially large hard alloy products

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
  • Cemented carbides big product aging treatment process
  • Cemented carbides big product aging treatment process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] In the heating tank, it is 156mm (millimeter) that the outer diameter size is loaded into, that the inner diameter size is 87mm (millimeter), and that 20 pieces of rolls with a height of 57mm (millimeter) are added, and tap water is added until the product is completely submerged in water, and then the added water weight is 2 ~3% soda ash (Na 2 CO 3 ), adjust the steam pressure to 2.0MPa and heat the water until the water boils (you can also use electricity or gas to directly heat the heating tank until the water boils, the following examples are the same), and keep the water boiling for 48h ( Hour). During the heat preservation period, tap water should be replenished in time to keep the water surface in the tank covering the alloy products all the time, so as not to expose the alloy products to the water surface. After the holding time is up, stop heating, turn on the water, and unload the product after cooling. same). After testing, the flexural strength of the tr...

Embodiment 2

[0018] In the heating tank, 60 rolls with an outer diameter of 156 mm, an inner diameter of 87 mm and a height of 57 mm are loaded into the heating tank, tap water is added until the product is completely submerged in water, and then 2 to 3% of the weight of the added water is added. Adjust it to 3.0MPa and heat the water until the water boils, and keep the water boiling for 72 hours. After testing, the flexural strength of the treated alloy is increased by more than 10%.

Embodiment 3

[0020] In the heating tank, it is 230mm in outer diameter, 130mm in inner diameter, and 60 rolls with a height of 72mm. Tap water is added to exceed the surface of the product, and then 4% to 5% of the weight of the added water is added. The steam pressure is adjusted to Heat the water at 3.0MPa until the water boils, and keep it warm for 120h under the condition of keeping the water boiling. After testing, the flexural strength of the treated alloy is increased by more than 12%.

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 discloses an aging process of a large product of hard alloy. The process comprises the steps as follows: a heating tank is added with hard alloy products, and added with water until the hard ally products are fully immersed in water, added with soda, the weight of which is 1 to 5 percent of the added water, introduced with vapor to heat (or electrified or introduced with fuel gas toheat directly) until the water is boiled; heat is preserved for 48 to 124 hours; timely water replenishing is needed during heating process so as to ensure that product is not exposed outside the water; heating is stopped after the heat preserving time is up; and then products can be taken out after discharging water and cooling; then the products can be cleared up after standing stilly for a day. The aging process of the invention has the advantages of simple process and operation, being economic and effective, being capable of improving intensity of hard alloy with more than 10 percent without leading to oxidation, decarbonization and making dirty on the surface of alloy.

Description

technical field [0001] The invention relates to a hard alloy aging treatment process, in particular to a hard alloy large product aging treatment process. Background technique [0002] Aging treatment after sintering of cemented carbide to eliminate stress is recognized as an effective overall strengthening technology. After treatment, the structural composition, microstructural parameters and stress state of the alloy γ phase will change, which is conducive to improving the strength of the alloy. strength. At present, there are four main aging treatment methods for cemented carbide: one is to store the product at room temperature or under natural conditions for a long time, which is called natural aging; the other is to anneal (or temper) at a certain temperature; the third is to Ultrasonic vibration strengthening; the fourth is hard blunt vibration treatment. The effect of natural aging treatment is good, but it takes a long time and cannot meet the production needs; the...

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 Patents(China)
IPC IPC(8): C22F1/00
Inventor 周新华张忠健汪松云王力民肖可俊赵声志汪巍管玉明谢浩
Owner ZHUZHOU HARD ALLOY GRP CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com