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

Hot-wrapping forging method of cobalt-based alloy ingot

A cobalt-based alloy and cladding technology, which is applied in the direction of manufacturing tools, metal processing equipment, forging/pressing/hammer devices, etc., can solve the problem that there is no successful forging of CoCrMo alloy ingots

Inactive Publication Date: 2019-05-31
KAILI UNIV
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there is no report of successful forging of CoCrMo alloy ingots in China.

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
  • Hot-wrapping forging method of cobalt-based alloy ingot
  • Hot-wrapping forging method of cobalt-based alloy ingot
  • Hot-wrapping forging method of cobalt-based alloy ingot

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Obtain the forging billet, that is, the electroslag ingot obtained after vacuum induction furnace and electroslag remelting, with a size of 240mm in diameter and 580mm in length;

[0032] (2) if figure 1 As shown, select zirconium-containing refractory asbestos of sufficient size, spread zirconium-containing refractory asbestos with a thickness of 15-20 mm on the ground, wait for the high-temperature forging blank to be wrapped;

[0033] In the zirconium-containing refractory asbestos of this embodiment, the weight content of zirconium oxide is 15%-16%.

[0034] (3) Furnace temperature reaches between 600°C and 700°C, the forging billet is loaded into the furnace, the temperature is evenly raised to 1150°C and then kept warm, and after keeping warm for 150 minutes, it is out of the furnace and wrapped with zirconium-containing refractory asbestos;

[0035] (4) if figure 2 As shown, the wrapped forging billet is returned to the furnace and kept at 1150°C for 60-90...

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 hot working method in the field of alloys, in particular to a hot-wrapping forging method of a cobalt-based alloy ingot, and belongs to the field of forging of a hard-to-deform cobalt-based alloy. Firstly, a forging blank is obtained by melting with a vacuum induction furnace and electroslag remelting; then the blank is heated to 1150 DEG C-1250 DEG C for heat preservation; and then covering heat preservation is carried out with refractory asbestos, and forging is carried out after the heat preservation time is reached. According to the method, the refractory asbestos are adopted for cladding and forging for the first time; in the forging process, the blank temperature is strictly controlled within a certain temperature range, after multiple-fire-number forging is carried out, coating heat preservation is carried out after each fire number, and it is ensured that the CoCrMo alloy forging blank is always in the good plastic working condition; and finally the qualified forging is finally obtained.

Description

technical field [0001] The invention relates to a thermal processing method in the field of alloys, in particular to a hot clad forging method for cobalt-based alloy ingots, and belongs to the field of forging difficult-to-deform cobalt-based alloys. Background technique [0002] Cobalt-based alloys have excellent high temperature performance, excellent heat strength, corrosion resistance, and outstanding scratch resistance. Therefore, cobalt-based alloys are widely used in aviation, aerospace, nuclear engineering, energy power, transportation, petrochemical, metallurgy, medicine and other fields. Cobalt-based alloys used in medicine usually refer to cobalt-chromium alloys. In foreign countries, cobalt-based alloys are widely used in artificial joints. Among them, forged cobalt-chromium-molybdenum alloys (adding molybdenum to cobalt-chromium alloys) have been widely used in the manufacture of human body Implanted in bone. In addition to: 1) non-toxic and side effects; 2) g...

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): B21J1/00B21J1/06B21J5/00B21K29/00C22C19/07C22F1/10
Inventor 王雷
Owner KAILI UNIV