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

Production and processing technology for super-strength medium carbon alloy steel material

A technology of carbon alloy steel and processing technology, which is applied in the field of wire rod production and processing, can solve the problems of high bolt rejection rate, achieve uniform grain size, improve service performance and service life, and have good market prospects

Inactive Publication Date: 2017-08-18
DONGGUAN KELEE STEEL WIRE
View PDF7 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, the present invention aims at the deficiencies in the prior art, and its main purpose is to provide a production and processing technology for super-strength medium-carbon alloy steel materials, which can effectively solve the problem of high scrap rate of bolts produced by existing wire rods

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
  • Production and processing technology for super-strength medium carbon alloy steel material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0032] A production and processing technology of super-strength medium-carbon alloy steel material, comprising the following steps:

[0033] (1) Material selection: select the domestically produced material of model 10B33 as the base material, and its B content is 0.0025%;

[0034] (2) Drawing: Drawing is carried out on the principle of combining a large total compression rate and a small partial compression rate, the total compression rate is 60%, and the partial compression rate is 15%;

[0035] (3) Spheroidizing annealing: first raise the temperature to 30°C above the austenite transformation temperature, keep it for 3.5 hours, then cool at a rate of 15°C / hour to 20°C below the austenite transformation temperature, keep it for 4 hours, and then cool with the furnace The whole process of spheroidizing annealing is carried out in methanol atmosphere, and the flow rate of methanol gas is 1.8L / min.

[0036] (4) Cold heading forming: Cold heading forming in the two-die four-pun...

Embodiment 3

[0039] A production and processing technology of super-strength medium-carbon alloy steel material, comprising the following steps:

[0040] (1) Material selection: select the domestically produced material of model 10B33 as the base material, and its B content is 0.0030%;

[0041] (2) Drawing: Drawing is carried out on the principle of combining a large total compression rate and a small partial compression rate, the total compression rate is 80%, and the partial compression rate is 8%;

[0042] (3) Spheroidizing annealing: first raise the temperature to 40°C above the austenite transformation temperature, keep it for 3 hours, then cool at a rate of 15°C / hour to 30°C below the austenite transformation temperature, keep it for 6 hours, and then cool with the furnace The whole process of spheroidizing annealing is carried out in methanol atmosphere, and the flow rate of methanol gas is 1.8L / min.

[0043] (4) Cold heading forming: Cold heading forming in the two-die four-punch he...

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 a production and processing technology for a super-strength medium carbon alloy steel material, comprising the following steps: (1) material selection: selecting a domestically produced material with type of 10B33 as a base material; (2) drawing: performing drawing according to a principle of combination of high total compression ratio and low partial compression ratio; (3) spheroidizing annealing; (4) cold heading forming: performing cold heading forming in a two-die four-punch heading machine; (5) thermal treatment: performing thermal treatment by adopting a manner of combination of quenching and high temperature tempering. After being processed with the technology disclosed by the invention, a steel material has relatively strong plastic deformation capability, an annealed structure is uniform in grain, the rate of spheroidization is high, no abnormal structure exists, the steel material meets the forming requirement of the client, and the mechanical property of a bolt after thermal treatment can reach the standard requirement of 12.9 level. A final product is small in notch sensitivity, high in fatigue strength and low in fracture risk, and has certain corrosion resistance; and by controlling the adding of alloy elements, the material cost is greatly lowered.

Description

technical field [0001] The invention relates to the technology in the field of production and processing of wire rods, in particular to a production and processing technology of super-strength medium-carbon alloy steel materials. Background technique [0002] Iron and steel materials are the basic materials of modern industry. Among all the basic materials for social development, iron and steel materials account for the highest proportion. With the rapid development of my country's economy, the speed of steel consumption and production is increasing year by year, and the production capacity continues to expand. However, the entire steel industry in my country has been in a state of loss. A large amount of ore is exported in large quantities after rough processing, and then a large amount of high-value-added high-grade steel products are purchased from abroad. Moreover, the resource consumption per unit of steel production in our country is much higher than that of developed ...

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): C21D1/32C21D1/18C21D1/74C21D8/00
CPCC21D1/32C21D1/18C21D1/74C21D8/005
Inventor 肖杰邓之强
Owner DONGGUAN KELEE STEEL WIRE