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

Technique for oil quenching casting sphere made from high chrome alloy

A high-chromium alloy and casting ball technology, which is applied in the oil quenching process of the casting section and the field of high-chromium alloy casting balls, can solve the problems of spalling, restriction of wear resistance and service life, and easy occurrence of out-of-roundness, so as to achieve wear resistance and corrosion resistance Increased capacity, multiple economic benefits, and extended service life

Inactive Publication Date: 2005-03-30
ANHUI FENGXING WEAR RESISTANT MATERIALS CO LTD
View PDF0 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the production efficiency of air quenching is low, and the products have impermeable quenching, uneven hardness, and easy occurrence of out-of-round, peeling, and broken phenomena during use.
At the same time, limited by the supercooling degree of the air quenching process, the quenching average hardness of high chromium alloy wear-resistant casting balls is difficult to reach 60HRc, which restricts the further improvement of its wear resistance and service life
For this reason, the wear-resistant material industry at home and abroad has been actively seeking a new quenching process to improve the strength, toughness and wear-resistant and corrosion-resistant capabilities of high-chromium alloy wear-resistant casting balls, but there has been no fundamental breakthrough so far.

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
  • Technique for oil quenching casting sphere made from high chrome alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The invention mainly relates to the quenching treatment of φ6.5-φ130 high chromium alloy wear-resistant casting balls and casting segments in oil medium. Its implementation process is as follows:

[0018] 1. High chromium alloy wear-resistant cast balls and cast segments are heated to the quenching temperature (920-1150°C) in a push rod type continuous heating furnace, and placed on the movable quenching cradle 1 after being released from the furnace (see attached figure), and made to Spread evenly.

[0019] 2. Start the cradle control mechanism to make the quenching cradle move back and forth up and down to ensure that the high chromium alloy wear-resistant casting balls and casting segments can roll freely on it.

[0020] 3. Immerse the movable quenching cradle in the oil pool 2 (see the attached picture) to carry out oil cooling and quenching treatment on the high chromium alloy wear-resistant casting balls and casting segments. The quenching medium is No. 10 or No....

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

This invention relates to an art for oil-quenching high-chromium alloy cast ball. The high-chromium alloy cast ball and cast-section are heated to quenching temp., then tapped out of the furnace, proceeding oil-quenching, oil temp. being controlled <120 deg.C, when temp. of the product being lowered below 300 deg.C, the cast ball and cast section are taking out of the oil-cell. The wear-resisting high-chromium cast ball and cast section treated by using this method are better than that of prior art treatment in various kinds of technical index, wherein: quenching hardness=60-65 deg.C, difference (between center and surface) of hardness <2.0 RHc, ball falling test >3000 times. This quenching art overcomes prior art defect. The product treated by this method has excellent wear-resisting property and longer service-life.

Description

technical field [0001] The invention relates to a heat treatment process for alloy steel and alloy cast iron quenching, in particular to an oil quenching process for high chromium alloy casting balls and casting segments. Background technique [0002] Alloy wear-resistant casting balls and casting segments are widely used as a grinding medium for powder engineering in building materials, mining, chemical industry, thermal power and other industries, and are mass-produced by casting. In order to make alloy wear-resistant cast balls and cast segments have excellent comprehensive mechanical properties such as hardness, toughness, wear resistance, and corrosion resistance, selecting a suitable heat treatment method is a key process for quality control of wear-resistant cast balls and cast segments. [0003] At present, the wear-resistant cast balls and cast segments of high-chromium alloys in the wear-resistant materials industry at home and abroad basically adopt air-cooled que...

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): C21D1/18C21D1/58C21D5/00
Inventor 陈宗明赵金华沈茂林汪国清
Owner ANHUI FENGXING WEAR RESISTANT MATERIALS CO LTD
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