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Method for recovering hammer of refined forging machine through laser cladding

A technology of laser cladding and precision forging machine, applied in coating, metal material coating process and other directions, can solve the problems of complex surfacing welding process, achieve delayed expansion rate, excellent wear resistance, enhanced surface hardness and wear performance Effect

Active Publication Date: 2017-09-05
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hammer head must be preheated to 350°C before surfacing welding, and this temperature must be maintained throughout the welding process. The welding process is complicated, and workers need to operate in a higher temperature environment

Method used

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  • Method for recovering hammer of refined forging machine through laser cladding
  • Method for recovering hammer of refined forging machine through laser cladding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The transition alloy layer adopts the composition and mass percentage of alloy powder: Ni 56%, Cr 18%, Co 12%, Mo7%, W 2%, Al 2%, C 0.25%, Ti 2.4%, B 0.35%.

[0032] The surface alloy layer adopts the composition and mass percentage of alloy powder: C 0.1%, Si 5%, Mn 1.2%, S0.025%, P 0.015%, Fe 7%, Mo 15%, Cr 15%, Co 2.5% , W 4.5%, and the rest is Ni.

[0033] The alloy powder for the transition alloy layer and the alloy powder for the surface alloy layer were fully mixed in a ball mill for 2 hours each, vacuum-dried at 100°C for 1.5 hours, and cooled naturally to obtain transition alloy layer cladding materials for laser cladding and Surface alloy layer cladding material.

[0034] Remove the dust, oil and rust on the hammer head of the precision forging machine, measure the size of each part of the hammer head of the precision forging machine, and determine the failure part and its wear amount. Remove the 0.5mm fatigue layer at the failure part of the precision forgi...

Embodiment 2

[0045] The transition alloy layer adopts the composition and mass percentage of alloy powder: Ni 56%, Cr 18%, Co 12%, Mo7%, W 2%, Al 2%, C 0.25%, Ti 2.4%, B 0.35%.

[0046] The surface alloy layer adopts the composition and mass percentage of alloy powder: C 0.8%, Si 5%, Mn 1.0%, S0.023%, P 0.013%, Fe 5%, Mo 16%, Cr 15%, Co 2.2% , W 5.0%, and the rest is Ni.

[0047] The alloy powder for the transition alloy layer and the alloy powder for the surface alloy layer were fully mixed in a ball mill for 2 hours each, vacuum-dried at 100°C for 1.5 hours, and cooled naturally to obtain transition alloy layer cladding materials for laser cladding and Surface alloy layer cladding material.

[0048] Remove the dust, oil and rust on the hammer head of the precision forging machine, measure the size of each part of the hammer head of the precision forging machine, and determine the failure part and its wear amount. Remove the 0.5mm fatigue layer at the failure part of the precision forgi...

Embodiment 3

[0055] The transition alloy layer adopts the composition and mass percentage of alloy powder: Ni 56%, Cr 18%, Co 12%, Mo7%, W 2%, Al 2%, C 0.25%, Ti 2.4%, B 0.35%.

[0056] The surface alloy layer adopts the composition and mass percentage of alloy powder: C 0.15%, Si 4.5%, Mn 1.0%, S 0.023%, P 0.013%, Fe 7%, Mo 15.8%, Cr 16%, Co 2.3%, W 5.3%, the rest is Ni.

[0057] The alloy powder for the transition alloy layer and the alloy powder for the surface alloy layer were fully mixed in a ball mill for 2.5 hours each, vacuum-dried at 120°C for 1 hour, and cooled naturally to obtain the transition alloy layer cladding material for laser cladding and Surface alloy layer cladding material.

[0058] Remove the dust, oil and rust on the hammer head of the precision forging machine, measure the size of each part of the hammer head of the precision forging machine, and determine the failure part and its wear amount. Remove the 0.5mm fatigue layer at the failure part of the precision fo...

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Abstract

The invention discloses a method for recovering a hammer of a refined forging machine through laser cladding. The method comprises the following steps: carrying out laser cladding on a transitional alloy layer which is prepared from 17.5 to 19% of Cr, 10 to 12.8% of Co, 6.3 to 7.5% of Mo, 1 to 2.6% of W, 1.6 to 2.5% of Al, 0.23 to 0.29% of C, 2.1 to 2.9% of Ti, 0.23 to 0.38% of B and the balance of Ni on the surface of the hammer of the refined forging machine; and then carrying out laser cladding on a surface alloy layer which is prepared from 13 to 16.8% of Mo, 14 to 18% of Cr, 4 to 5.62% of W, 4.3 to 5.8% of Si, 8.2 to 9% of Fe, the maximum 0.15% of C, the maximum 1.2% of Mn, the maximum 0.028% of S, the maximum 0.019% of P, the maximum 2.7% of Co, and the balance of Ni. According to the recovering method disclosed by the invention, the abrasion quantity of the hammer of the refined forging machine under high temperature and strong abrasion of forging can be reduced, extension velocity of cracks of a cladding layer is delayed, and the service life of the hammer of the refined forging machine is prolonged.

Description

technical field [0001] The invention belongs to the technical field of damage repair of die steel workpieces, and relates to the repair of the surface damage of the hammer head of a precision forging machine, in particular to a method for repairing the surface damage of the hammer head of a precision forging machine based on laser cladding. Background technique [0002] The hammer head of the precision forging machine is one of the important parts of the precision forging machine. Two pairs of hammer heads are connected to the four hammer rods at 90° to each other through the base plate. The hammer rod is connected to the crank-link mechanism and moves synchronously under the drive of the crankshaft to realize the radial impact of the two pairs of hammer heads. [0003] The hammer head of precision forging machine is made of die steel 56CrNiMoV7, with 410 strikes per minute. Since the working surface of the hammer head is in contact with the hot metal at high temperature fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10C22C19/05
Inventor 李玉新张鹏飞吴利芸白培康刘斌
Owner ZHONGBEI UNIV
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