Heat treatment technology for die Cr12MoV steel

A technology of die steel and steel, which is applied in the field of heat treatment process of die Cr12MoV steel, can solve problems such as easy collapse, and achieve the effect of improving the life of the die

Inactive Publication Date: 2018-02-23

HENGYANG FENGSHUN AXLE CO LTD

0 Cites 4 Cited by

AI-Extracted Technical Summary

Problems solved by technology

Sheet metal stamping (such as stretching, blanking, trimming, punching, etc.) Friction, so this type of mold steel should have high hardness and high strength, high wear resistance to ensure that it is not easy to produce micro-plastic deformation or damage when subjected to high stres...

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

Abstract

A heat treatment process for mold Cr12MoV steel. The main chemical composition of the mold steel is: C: 1.45-1.70; Si: ≤0.40; Mn: ≤0.40; S: ≤0.03; P: ≤0.03; Cr: 11-12.5 ; Ni: ≤0.25; Cu: ≤0.30; V: 0.15~0.30; After cooling to a certain temperature, take it out of the furnace and air-cool it, then put it into the heating furnace to heat and then keep it warm; C. Cool in the furnace and then keep it warm; D. Put the mold steel into the quenching oil to cool; E. Put the mold steel into the furnace Heating, then heat preservation, then cooling, and finally taking out the furnace and air cooling; the present invention makes the mold steel have high hardness, high strength and sufficient toughness through repeated heating, heat preservation and cooling.

Technology Topic

QuenchingTool steel +5

Examples

Experimental program(3)

Example Embodiment

[0027] Example 1:

[0028] A heat treatment process for mold Cr12MoV steel, its main chemical components are: C: 1.45-1.70; Si: ≤ 0.40; Mn: ≤ 0.40; S: ≤ 0.03; P: ≤ 0.03; Cr: 11-12.5; Ni : ≤0.25; Cu: ≤0.30; V: 0.15~0.30; Mo: 0.40~0.60. The specific process steps of heat treatment are as follows:

[0029] A. First, put this die steel into a box furnace for heating, heat to 865°C, and keep the temperature in the box furnace for 2.5 hours.

[0030] B. Cool to 460°C in the box furnace, take out the die steel from the box furnace, cool it in air, put it into the box furnace, heat it to 1015°C, and keep the temperature for 2.5 hours.

[0031] C. Cool to 925°C in a box furnace, and keep the temperature for 1.5 hours.

[0032] D. Take out the die steel from the box furnace and put it into the quenching oil of 40-70°C for cooling.

[0033] E. Put the mold steel cooled in the oil into the box furnace, heat it to 275 ° C, keep the temperature for 6.5 hours, cool it to 100 ° C in the box furnace, take it out from the box furnace, and carry out air Free cooling.

Example Embodiment

[0034] Embodiment 2:

[0035] A heat treatment process for mold Cr12MoV steel, its main chemical components are: C: 1.45-1.70; Si: ≤ 0.40; Mn: ≤ 0.40; S: ≤ 0.03; P: ≤ 0.03; Cr: 11-12.5; Ni : ≤0.25; Cu: ≤0.30; V: 0.15~0.30; Mo: 0.40~0.60. The specific process steps of heat treatment are as follows:

[0036] A. First, put this die steel into a box furnace for heating, be heated to 870 ° C, and keep the temperature in the box furnace for 3.5 hours.

[0037] B. Cool to 460°C in a box furnace, take out the die steel from the box furnace, cool it in air, put it into the box furnace, heat it to 1025°C, and keep the temperature for 3.5 hours.

[0038] C. Cool to 930°C in a box furnace, and keep the temperature for 1.7 hours.

[0039] D. Take out the die steel from the box furnace and put it into the quenching oil of 40-70°C for cooling.

[0040] E. Put the mold steel cooled in the oil into the box furnace again, heat it to 285 ° C, keep the temperature for 7 hours, cool it to 100 ° C in the box furnace, take it out from the box furnace, carry out air Free cooling.

Example Embodiment

[0041] Embodiment three:

[0042] A heat treatment process for mold Cr12MoV steel, its main chemical components are: C: 1.45-1.70; Si: ≤ 0.40; Mn: ≤ 0.40; S: ≤ 0.03; P: ≤ 0.03; Cr: 11-12.5; Ni : ≤0.25; Cu: ≤0.30; V: 0.15~0.30; Mo: 0.40~0.60. The specific process steps of heat treatment are as follows:

[0043] A. First, put this die steel into a box furnace for heating, heat to 875°C, and keep the temperature in the box furnace for 4.5 hours.

[0044] B. Cool down to 460°C in the box furnace, take out the die steel from the box furnace, carry out air cooling, then put it into the box furnace, heat to 1035°C, and keep the temperature for 4.5 hours.

[0045] C. Cool to 935°C in a box furnace, and keep the temperature for 2 hours.

[0046] D. Take out the die steel from the box furnace and put it into the quenching oil of 40-70°C for cooling.

[0047] E. Put the mold steel cooled in the oil into the box furnace, heat it to 295 ° C, keep the temperature for 7.5 hours, cool it to 100 ° C in the box furnace, take it out from the box furnace, and carry out air Free cooling.

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

Description & Claims & Application Information

We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.

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

Classification and recommendation of technical efficacy words

Improve mold life

People also interested in

Chemical composition Hardness Heating furnace Heat treating Toughness

Heat treatment technology for die Cr12MoV steel

A technology of die steel and steel, which is applied in the field of heat treatment process of die Cr12MoV steel, can solve problems such as easy collapse, and achieve the effect of improving the life of the die

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Examples

Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

Similar technology patents

Wear-resistant mold surface nanocrystal coating and preparation method thereof

Golf ball mold and golf ball manufacturing method

Life extension method of hot stamping forming mold for high-strength steel plate and application

Precise hot forming method for deep-cavity ribbed notched irregular cylindrical forge piece

Punching machine for machining piston assemblies used for automobile brakes

Classification and recommendation of technical efficacy words

Hot and cold composite precision forging forming method of great-modulus high-thickness straight-tooth cylindrical gear

Die management method and die management system

Method for machining high-rigidity inner ring flange of automobile hub bearing unit

Special die for stamping inward bending part and stamping method

Pressure die used for dust-free drawing aluminum-coated steel

People also interested in