Heat treatment process of low-carbon alloy material
A low-carbon alloy and alloy material technology, which is applied in the field of heat treatment of low-carbon alloy materials, can solve problems such as unsatisfactory system heat treatment technology and unsatisfactory requirements, and achieve improved bending performance, extended service life, and improved wear resistance and the effect of intensity
Inactive Publication Date: 2013-02-06
MEISHAN HENGSHENG MECHANICAL EQUIP
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] In the processing technology of low-carbon alloy materials for riveting devices, especially 12Cr2Ni4 materials, there is no systematic and comprehensive processing technology solution, and the results of material processing cannot meet the satisfactory requirements. The tempering heat treatment process can obtain higher surface hardness and core toughness. Under the condition of maintaining high toughness inside the workpiece, a high hardness and high strength surface layer can be obtained to improve the wear resistance and toughness of the workpiece. Strength, but its service life is also closely related to the toughness of the surface layer and the good cooperation between the surface layer and the core.
There is currently no satisfactory system heat treatment technology
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0030] This example adopts the heat treatment process of the present invention.
[0031] Material preparation, take a riveter made of 12Cr2Ni4 alloy material, and remove surface debris.
[0032] Heat treatment, the riveter made of the above-mentioned 12Cr2Ni4 alloy material is processed according to the following steps,
[0033] 1. Carbonitriding, treat the workpiece under the condition of 850℃~870℃, add anhydrous methanol dropwise at a rate of 180~200 drops / per minute, and after stabilizing for 60~90 minutes, add 120~140 drops / per minute Add kerosene dropwise at a speed of 240-280 ml / min and feed ammonia gas with a concentration of 99.99% for 60-90 minutes, then add kerosene dropwise at a speed of 70-90 drops / min while feeding a concentration of 160-200 ml / min After 150-180 minutes of 99.99% ammonia gas; cool down to 660°C-720°C, add anhydrous methanol dropwise at a rate of 60-90 drops / min and at the same time pass in 99.99% ammonia gas at a concentration of 80-120 ml / min 90...
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
| Property | Measurement | Unit |
|---|---|---|
| tensile strength | aaaaa | aaaaa |
| yield strength | aaaaa | aaaaa |
| hardness | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses a heat treatment process of a low-carbon alloy material, and the heat treatment process comprises the steps of carbonitriding treatment, quenching treatment, cryogenic treatment and tempering treatment. The low-carbon alloy material, in particular 12Cr2Ni4 alloy material after the treatment through the process can obtain the surface with higher hardness and the heart part with strong toughness, and under the condition of keeping the higher toughness in a workpiece, a surface layer with high hardness and high strength can be obtained, thereby improving the abrasion resistance and the strength of the workpiece and enabling the service life of the workpiece to be in a close relationship with the toughness of the surface layer and good matching of the strong toughness of the surface layer and the heart part. After adopting the cryogenic treatment, the service life can be well prolonged and the hardness and the strength of a matrix can be improved.
Description
technical field [0001] The invention belongs to the technical field of heat treatment technology for metal materials, in particular to the heat treatment technology for low-carbon alloy materials. Background technique [0002] The heat treatment process generally includes carbonitriding, quenching, cryogenic treatment and tempering and other technical methods, especially the recently developed cryogenic treatment has further improved the properties of the material after treatment. When the metal is hardened from heat treatment to the cooling process, the alloy and carbon in it dissolve and combine and diffuse to form austenite (Austenite). The final transformation point (Mf) of martensite is very low, so a large amount of austenite will remain after quenching and cooling to room temperature, thus reducing the hardness, wear resistance and service life of the metal. Fragmentation, moreover, there are many physical properties, especially thermal properties and magnetic proper...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): C23F17/00C23C8/32C21D1/18C21D1/00
Inventor 张森林张永明
Owner MEISHAN HENGSHENG MECHANICAL EQUIP