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A preparation method of a high-hardness hammerhead for a radial precision forging machine

A high-hardness, precision forging machine technology, applied in the field of metal materials, can solve problems such as difficult to meet the production requirements of high-performance alloys, easily deformed, broken and scrapped, and achieve the effects of compact structure, lower working temperature, and energy saving

Inactive Publication Date: 2017-11-03
NO 52 INST OF CHINA NORTH IND GRP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the working surface of the hammer head is in contact with the hot metal at high temperature for a long time, and it bears a huge impact load and the huge friction generated when the metal deforms and flows during the striking process, it is easy to deform, crack, and even break and scrap
It is difficult for the hammer heads used in the active precision forging machines to meet the production requirements of high-performance alloys

Method used

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  • A preparation method of a high-hardness hammerhead for a radial precision forging machine
  • A preparation method of a high-hardness hammerhead for a radial precision forging machine
  • A preparation method of a high-hardness hammerhead for a radial precision forging machine

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Effect test

Embodiment 1

[0030] A method for preparing a high-hardness hammerhead for a radial precision forging machine, the specific steps are as follows:

[0031] 1) Matrix forging: the matrix material is 4Cr5MoSiV1 hot forging die steel, its chemical composition: C 0.32%, Si0.85%, Mn≤0.40%, Cr 4.5%, Mo 1.0%, V 0.8%, the rest is Fe, hot forging Die steel forging process: forging temperature is 750°C, forging ratio is 2.5; forging annealing process is: 860°C, heat preservation for 2h, furnace cooling to 540°C, air cooling;

[0032] 2) Heat treatment of matrix; heat treatment process of 4Cr5MoSiV1 hot forging die steel forgings: oil quenching at 1000°C, tempering at 500°C;

[0033] 3) Substrate surface treatment: Grinding and shot blasting the working surface of the substrate; the treatment process uses 40-80 mesh white corundum (HRC 70-90), and the treatment time is 1-2 hours;

[0034] 4) Laser cladding on the working surface of the substrate; a. Selection of cladding materials; the material for la...

Embodiment 2

[0037] A method for preparing a high-hardness hammerhead for a radial precision forging machine, the specific steps are as follows:

[0038] 1) Matrix forging; the matrix material is 4Cr5MoSiV1 hot forging die steel, its chemical composition: C 0.35%, Si0.90%, Mn≤0.40%, Cr 4.5%, Mo 1.2%, V 0.9%, the rest is Fe; hot forging Die steel forging process: forging temperature is 750°C, forging ratio 2.7; forging annealing process: 860°C, heat preservation for 2h, furnace cooling to 540°C, air cooling;

[0039] 2) Heat treatment of matrix; heat treatment process of 4Cr5MoSiV1 hot forging die steel forgings: oil quenching at 1000°C, tempering at 500°C;

[0040] 3) Substrate surface treatment: Grinding and shot blasting the working surface of the substrate; the treatment process uses 40-80 mesh white corundum (HRC 70-90), and the treatment time is 1-2 hours;

[0041] 4) Laser cladding on the working surface of the substrate; a. Cladding material selection; the material for laser claddi...

Embodiment 3

[0044] A method for preparing a high-hardness hammerhead for a radial precision forging machine, the specific steps are as follows:

[0045]1) Matrix forging; the matrix material is 4Cr5MoSiV1 hot forging die steel, its chemical composition: C 0.40%, Si 1.0%, Mn≤0.40%, Cr 4.8%, Mo 1.3%, V 1.0%, and the rest is Fe; hot forging die Steel forging process: forging temperature is 800°C, forging ratio is 3.0; forging annealing process is: 890°C, heat preservation for 4h, furnace cooling to 540°C, air cooling;

[0046] 2) Heat treatment of matrix; heat treatment process of 4Cr5MoSiV1 hot forging die steel forgings: oil quenching at 1050°C, tempering at 550°C;

[0047] 3) Substrate surface treatment: Grinding and shot blasting the working surface of the substrate; the treatment process uses 40-80 mesh white corundum (HRC 70-90), and the treatment time is 1-2 hours;

[0048] 4) Laser cladding on the working surface of the substrate; a. Selection of cladding materials; the material for...

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Abstract

A method for preparing a high-hardness hammer head for a radial precision forging machine is characterized in that: matrix forging: the matrix material is 4Cr5MoSiV1 hot forging die steel, and its chemical composition: C 0.32%~0.42%, Si 0.80%~1.20%, Mn≤0.40%, Cr 4.5%~5.5%, Mo 1.0%~1.5%, V 0.8%~1.0%, the rest is Fe; forging process of hot forging die steel: forging temperature is 750~800℃, forging ratio is 2.5~ 3.0; forging annealing process: 860~890°C, heat preservation 1~4h, furnace cooling to 540°C, air cooling; substrate heat treatment: 4Cr5MoSiV1 hot forging die steel forging heat treatment process: 1000~1050°C oil quenching, 500~600°C return Fire; substrate surface treatment: grinding and shot blasting of the substrate working surface; laser cladding of the substrate working surface; machining, performance testing, and storage. The object of the present invention is to provide a method for preparing a long-life, high-hardness radial precision forging hammer head.

Description

technical field [0001] The invention relates to a preparation process of a high-hardness hammerhead for a radial precision forging machine, belonging to the field of metal materials. Background technique [0002] The basic principle of radial forging was proposed by Austrian scientist Dr. B. Rralowetz in 1946. By the mid-1970s, radial forging machines from 6.5MN to 25MN had come out one after another and were applied to the forging of large billets and continuous casting ingots of high alloy steel and other alloys (such as tungsten alloy). Radial forging is a forming method that applies multiple uniformly distributed forging forces in the circumferential direction to shaft parts on the same plane at the same time. Precision forging machine hammer head is one of the important parts of precision forging machine, which is connected to four hammer rods at 90° to each other by the base plate. The hammer rod is connected with the crank connecting rod mechanism, and moves synchro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/24C21D1/18C23C24/10
Inventor 王力杰战中学吕建军闫志飞李鹏张文波刘素芬侯福青李永峰李淑利吴红张明贺新民
Owner NO 52 INST OF CHINA NORTH IND GRP CORP