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Workpiece curved surface position welding repairing method

A repair method and workpiece technology, applied in the field of welding repair, can solve the problems of unfavorable large-scale production, aggravated negative effects of surface wear, slow repair speed, etc., achieve good high temperature non-wettability, good welding repair effect, and save energy The effect of solder use

Active Publication Date: 2013-11-27
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these have high requirements for technical mastery, the processing technology is complex, and cannot solve the problem of repairing special and complex curved surfaces; The repair procedure is complicated; it is very difficult to machine the coating with high hardness and complex curved surface; this kind of technology has slow repair speed, high cost, and ineffective effect, which is not conducive to large-scale production; this kind of technology and method is due to the welding repair layer Severely uneven thickness, combined with hardening from machining, degrades the final weld repair, exacerbating the negative effects of surface wear in subsequent service

Method used

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  • Workpiece curved surface position welding repairing method
  • Workpiece curved surface position welding repairing method
  • Workpiece curved surface position welding repairing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1 : A method for repairing the inner curved surface of a golf head by welding, which specifically includes the following steps:

[0027] (1) The golf TC4 (alloy composition Ti-6Al-4V) titanium alloy cavity golf head prepared by precision casting with a negative deviation relative to the standard weight is the welding repair object, and the ball head usually has a negative deviation 1~5g, the welding repair position is required to be located on the inner surface of the cavity, and the surface is uniform and the shape is consistent with the design cavity surface, see figure 1 ;

[0028] (2) Measure the actual weight of the golf head, and determine the weight to be repaired by welding based on the difference between the standard weight and the actual weight;

[0029] (3) Select the uneven thinner part by measuring the golf head as the part to be repaired by welding;

[0030] (4) Alumina with a purity of 99.9% and a grain size of 1μm (Al 2 O 3 ) Produce a ceramic mold with...

Embodiment 2

[0038] Example 2 : A method for repairing the surface of a superalloy blade by welding, which specifically includes the following steps:

[0039] (1) The material of the workpiece to be repaired by welding is GH586 high-temperature alloy (solid solution state 760℃ / 16h+1080℃ / 4h) in the heat-treated state after rolling, and its chemical composition is C: 0.05, Cr: 19.3, Co: 11.2, W: 2.95, Mo: 8.17, Ti: 3.28 (wt%), the shape of the workpiece to be repaired by welding is a turbine blade with corrosion pit damage on the surface;

[0040] (2) Determine the defect range of the blade to be welded and repaired, and determine the amount of welding powder solder according to the actual defect range and degree;

[0041] (3) The solder is nickel-based amorphous powder solder, the composition is Ni 82 Cr 7.5 Fe 3 Si 4.5 B 3 (Impurity C <0.06%) (wt%);

[0042] (4) Use a micro-grinding electric drill to polish the pit-corrosion defect to remove the oxide and rust layer of the part, then polish it w...

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Abstract

The invention relates to a workpiece curved surface filling repairing method, which aims to solve the technical problems of low raw material utilization rate, poor repairing effect and high cost in the conventional repairing method. The method mainly comprises the steps as follows: determining weight and positions which need to be filled, paying solder in the positions to be repaired by a ceramic mold with a fit surface, slightly squeezing powder material with the fit surface of the ceramic mold to enable the powder material to be uniformly filled in the positions a workpiece, which need to be repaired, heating after fixing the relative positions of the mold and the workpiece to be prepared. The workpiece curved surface filling repairing method has the benefits that the utilization rate of raw material is high, and the cost is low and the surface shape of the prepared workpiece can be well controlled via the mold; after repairing, no rough edge is reserved on the workpiece, the repairing effect is good, and the method has good application prospect with respect to parts with stricter demand for size, shape and weight; the operation is convenient, and mass production is facilitated.

Description

technical field [0001] The invention relates to a welding repair method, in particular to a welding repair method for a curved surface of a workpiece. Background technique [0002] Wear and surface defects are common phenomena in parts, especially metal parts. [0003] At present, technologies such as thermal spraying, spray welding, brush plating, repair welding and surfacing welding are used to repair the metal wear surface and surface defects, make proper compensation to restore the shape and size, and prolong the working life, which has reached the goal of saving materials and maintenance costs. Purpose. However, these have high requirements for technical mastery, complex processing technology, and cannot solve the problem of repairing special and complex curved surfaces; The repair procedure is complicated; it is very difficult to machine the coating with high hardness and complex curved surface; this kind of technology has slow repair speed, high cost, and ineffectiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K1/008B23K1/20B23K3/08
Inventor 李福山杜学山王建峰张锁黎文强
Owner ZHENGZHOU UNIV
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