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

High-carbon steel wire rod for cold forging, processed good using the same, and methods for manufacturing thereof

A manufacturing method and high carbon steel technology, applied in metal processing equipment, metal rolling, threaded fasteners, etc., can solve problems such as increasing manufacturing costs, and achieve the effect of excellent resistance

Active Publication Date: 2017-10-03
浦项股份有限公司
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, the problem with the above-mentioned technology is that, since it is necessary to include other alloying elements in addition to the basic components constituting the non-quenched and tempered steel, it will become a cause of increased manufacturing costs.

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
  • High-carbon steel wire rod for cold forging, processed good using the same, and methods for manufacturing thereof
  • High-carbon steel wire rod for cold forging, processed good using the same, and methods for manufacturing thereof
  • High-carbon steel wire rod for cold forging, processed good using the same, and methods for manufacturing thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0081] After tapping 300 tons of molten steel having the composition shown in Table 1 below, each billet was rolled under normal conditions. Thereafter, under the conditions shown in Table 2 below, each billet was heated and held, followed by hot rolling, and finally coiled and cooled to produce a wire rod. Among them, the wire rod belonging to the invention steel has a diameter of 13mm when it finally passes through the finishing mill.

[0082] Thereafter, the microstructure of each produced wire rod was observed, and the tensile strength and area reduction ratio (RA) were measured and shown in Table 2 below.

[0083] 【Table 1】

[0084]

[0085] 【Table 2】

[0086]

[0087] ([' / P] in the microstructure of Table 2 represents the sum of the fractions of pearlite [P] and proeutectoid ferrite ['], [B] represents bainite, and [a'] represents proeutectoid ferrite analysis of iron carbide.)

[0088] As shown in Tables 1 and 2, the inventive steel satisfying the composition ...

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

PropertyMeasurementUnit
tensile strengthaaaaaaaaaa
strengthaaaaaaaaaa
strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a high-carbon steel wire rod for cold forging, a processed good using the same, and methods for manufacturing thereof. The invention relates to a wire rod for cold forging. Specifically, the invention aims at providing a high-carbon steel wire rod for cold forging a bolt, a processed good using the same and methods for manufacturing thereof.

Description

technical field [0001] The present invention relates to a wire rod for cold heading, and more specifically, aims to provide a high carbon steel wire rod that can be used for cold heading bolts, a processed product using the same, and a method for producing the same. Background technique [0002] Most structural steels are quenched and tempered steels (Quenched and Tempered steel) that are reheated, quenched, and tempered after hot working to improve strength and toughness. [0003] On the other hand, non-quenched and tempered steel is a steel used in place of the above-mentioned quenched and tempered steel, and even without additional heat treatment after hot working, it can obtain mechanical properties such as strength almost similar to the material of heat-treated steel. [0004] A general wire product is manufactured into a final product through the following steps. [0005] Hot rolled wire → cold drawing → spheroidizing annealing → cold drawing → cold heading → quenchin...

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): C22C38/02C22C38/04B21C37/04B21B1/16B21J5/00B21K1/44
CPCB21B1/16B21C37/04B21J5/00B21K1/44C22C38/02C22C38/04
Inventor 李在胜杨裕燮李基澔郑炳仁
Owner 浦项股份有限公司