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16 MnCrS5 gear steel and production method thereof

A production method and gear steel technology, applied in the field of metallurgical manufacturing, can solve problems such as uneven organization, unstable performance, and unstable control, and achieve the effects of low-cost production performance, good surface quality, and low process cost

Inactive Publication Date: 2019-02-22
宝钢特钢长材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problems of unstable control of N and AL / N, precise control of S components and control of A-type inclusions, uneven structure, unstable performance, etc.

Method used

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  • 16 MnCrS5 gear steel and production method thereof
  • 16 MnCrS5 gear steel and production method thereof
  • 16 MnCrS5 gear steel and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Table 1 16MnCrS5 chemical composition (Wt, %)

[0073] element

C

Si

mn

P

S

Cr

Ni

Al

O

N

Example 1

0.164

0.11

1.17

0.008

0.024

1.02

0.11

0.028

0.0018

0.0123

[0074] The low-magnification microstructure properties, high-magnification microstructure properties and mechanical properties of the 16MnCrS5 gear steel prepared in this example are shown in Tables 2, 3 and 4, respectively.

[0075] Table 2 Low magnification properties of 16MnCrS5

[0076]

[0077] Table 3 High-magnification properties of 16MnCrS5

[0078]

[0079] Table 4 Mechanical properties of 16MnCrS5

[0080]

[0081]

Embodiment 2

[0083] Table 5 16MnCrS5 chemical composition (Wt, %)

[0084] element

C

Si

mn

P

S

Cr

Ni

Al

O

N

Example 2

0.152

0.15

1.14

0.007

0.028

1.03

0.16

0.032

0.0014

0.0103

[0085] The low-magnification microstructure properties, high-magnification microstructure properties and mechanical properties of the 16MnCrS5 gear steel prepared in this example are shown in Tables 6, 7 and 8, respectively.

[0086] Table 6 Low magnification properties of 16MnCrS5

[0087]

[0088] Table 7 High-magnification properties of 16MnCrS5

[0089]

[0090] Table 8 Mechanical properties of 16MnCrS5

[0091]

Embodiment 3

[0093]Table 9 16MnCrS5 chemical composition (Wt, %)

[0094] element

C

Si

mn

P

S

Cr

Ni

Al

O

N

Example 3

0.155

0.14

1.12

0.007

0.025

1.05

0.13

0.030

0.0018

0.0101

[0095] The low-magnification microstructure properties, high-magnification microstructure properties and mechanical properties of the 16MnCrS5 gear steel prepared in this example are shown in Tables 10, 11 and 12, respectively.

[0096] Table 10 Low magnification properties of 16MnCrS5

[0097]

[0098] Table 11 High-magnification properties of 16MnCrS5

[0099]

[0100] Table 12 Mechanical properties of 16MnCrS5

[0101]

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PUM

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Abstract

The invention discloses 16 MnCrS5 gear steel and a production method thereof. The gear steel comprises the following elements of, by weight, 0.14%-0.19% of C, 1.00%-1.30% of Mn, 1.00%-1.20% of Cr, less than or equal to 0.25% of Si, 0.10%-0.40% of Ni, 0.0060%-0.0150% of N, 0.020%-0.045% of Al and the balance iron and unavoidable impurity elements, wherein the unavoidable impurity elements compriseless than or equal to 0.020% of P, 0.020%-0.040% of S, less than or equal to 0.04% of As, less than or equal to 0.02% of Sn, less than or equal to 0.010% of Sb, less than or equal to 0.008% of Pb, less than or equal to 0.010% of Bi, less than or equal to 0.0003% of B, less than or equal to 0.01% of Nb, less than or equal to 0.01% of Ti and less than or equal to 15*10<-6> of [O]. The gear steel hasthe following effective effects of being low in cost, high in purity, narrow in hardenability, high in fatigue strength and stable in performance.

Description

technical field [0001] The invention belongs to the technical field of metallurgical manufacturing, and relates to special steels, and relates to a steel and a production process thereof, in particular to a 16MnCrS5 gear steel with nitrogen, sulfur and nickel control for automobile gearboxes and a production process thereof. Background technique [0002] 16MnCrS5 belongs to Mn-Cr series gear steel and carburizing steel. Mn-Cr series gear steel is a steel grade imported from Germany in my country, and it is a high-standard steel for car gear series. This series of steel has good hardenability, small heat treatment deformation, good low temperature toughness, and good cutting performance. It can be used as carburized parts and quenched and tempered parts with large cross-sections. Due to the high degree of automation in the production of the automobile industry, the automatic production of the assembly line is adopted, and the requirements for materials are relatively high. ...

Claims

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Application Information

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IPC IPC(8): C22C38/04C22C38/02C22C38/06C22C38/40C21C7/10C21C7/04B22D11/00C21D8/00
CPCB22D11/001C21C7/0006C21C7/04C21C7/10C21C2007/0093C21D8/005C22C38/001C22C38/02C22C38/04C22C38/06C22C38/40
Inventor 孟祥军丁忠夏玲
Owner 宝钢特钢长材有限公司
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