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Free-machining steel material

A steel material, easy-cutting technology, applied in the field of metallurgical materials, can solve the problems of segregation of easy-cutting elements, which have not been solved well, and achieve the effects of excellent mechanical properties, high production efficiency, and excellent cutting performance

Inactive Publication Date: 2012-01-25
INNER MONGOLIA BAOTOU STEEL UNION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still some problems in the free-cutting steel materials produced in my country at present, mainly in the quality, precision, type, quantity and shape control of inclusions and other technical aspects. The problem of segregation of free-cutting elements in steel has not been well resolved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The components of each example are listed in Table 1, the morphology and distribution statistics of inclusions in each example are shown in Table 2, and the mechanical properties and cutting properties of each example are shown in Table 3.

[0023] Each example composition of table 1 (mass percentage / %)

[0024] example

C

mn

P

S

Sb

Zr

O

Ce

Example 1

0.13

1.23

0.07

0.28

0.01

-

0.017

-

Example 2

0.15

1.31

0.11

0.31

0.09

-

0.014

-

Example 3

0.15

1.28

0.08

0.29

0.35

-

0.018

-

Example 4

0.15

1.35

0.08

0.30

-

0.02

0.014

-

Example 5

0.14

1.29

0.11

0.28

-

0.41

0.015

-

Example 6

0.15

1.33

0.10

0.29

0.09

0.06

0.01...

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Abstract

The invention relates to a free-machining steel material. The free-machining steel material comprises the following chemical components in percentage by mass: 0.09 to 0.20 percent of C, 0.70 to 1.55 percent of Mn, less than or equal to 0.17 percent of Si, less than or equal to 0.19 percent of P, 0.20 to 0.38 percent of S, 0.01 to 0.35 percent of Sb, 0.02 to 0.41 percent of Zr, 0.009 to 0.023 percent of O, less than or equal to 0.01 percent of Al, less than or equal to 0.008 percent of N and the balance of Fe. In the invention, the free-machining steel material is prepared in an economic superior mode; and the machinability of the free-machining steel material is improved on the premise of ensuring the mechanical property of the material.

Description

technical field [0001] The invention relates to a free-cutting iron and steel material, which belongs to the field of metallurgical materials. Background technique [0002] Free-cutting steel materials not only reduce material cutting force and cutting temperature, increase tool life, reduce workpiece surface roughness, improve chip handling, but also save costs and increase production efficiency. At present, free-cutting steel materials have been widely used in various industries and departments such as automobiles, machinery, petrochemicals, and national defense industries. In free-cutting steel materials, the composition, shape (aspect ratio) and distribution of inclusions have a significant impact on the mechanical properties of the steel, cutting resistance, wear of cutting tools and surface finish of the workpiece. However, there are still some problems in the free-cutting steel materials produced in my country at present, mainly in the quality, precision, type, quant...

Claims

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Application Information

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IPC IPC(8): C22C38/60
Inventor 王金龙刘金董珍石晓霞张行刚姜海龙
Owner INNER MONGOLIA BAOTOU STEEL UNION
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