Composite rubber film used for complex shape surface multi-pas laser shock reinforcement

A laser shock strengthening, complex shape technology, applied in the direction of film/sheet adhesives, adhesives, etc., can solve the problems of increasing cost, reducing the efficiency of laser shock strengthening, etc., to achieve strong resistance to vaporization, a wide range of engineering applications, The effect of engineering application cost reduction

Inactive Publication Date: 2019-08-09
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the non-polluting composite absorption constrained layer material of this technology is still very brittle, because no matter how large the area of ​​the material is, each piece of material can only withstand the impact of one pulse laser. The block material is divided into multiple pieces to prevent the crack from spreading to the adjacent material when one piece is impacted and ruptured, and the material is replaced between every two laser shock strengthening
It not only seriously reduces the efficiency of laser shock strengthening and increases the cost, but also restricts the shape of the spot to be square, and the surface shape of the target should be flat

Method used

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  • Composite rubber film used for complex shape surface multi-pas laser shock reinforcement
  • Composite rubber film used for complex shape surface multi-pas laser shock reinforcement
  • Composite rubber film used for complex shape surface multi-pas laser shock reinforcement

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Experimental program
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Effect test

Embodiment 1

[0040] In engineering practice, when the surface of the part is designed or the surface of the planar part is notched due to corrosion and other reasons to form a curved surface, which requires laser shock strengthening, the surface of the target is a complex curved surface. The surface of the target 4 of the present invention can be any complex curved shape, Figure 10 Shown are several basic complex surface shapes, including basic shape elements: convex cylindrical surface, concave cylindrical surface, biconvex curved surface, biconcave curved surface, convex-concave (saddle-shaped) curved surface, etc.

[0041] Such as figure 1 As shown, a composite adhesive film for multi-pass laser shock strengthening on complex-shaped surfaces is composed of an energy-absorbing layer and an energy-constraining layer; The film consists of two layers of materials, which are connected by black electrical tape 2 and black double-sided tape 3; the energy-constrained layer is a transparent co...

Embodiment 2

[0051] Such as figure 2 As shown, the material of the transparent constrained layer in this embodiment is E-42 double atmosphere A-type epoxy resin and YS-1618 alicyclic amine curing agent according to the formula of 1.5:1 mass ratio, and the material of the transparent constrained layer is made of silica gel mold The 2.2 mm thick transparent constrained layer is kept at 100°C for 30 minutes, and the transparent constrained layer is in a semi-cured state at this time.

[0052] During the waiting period for the semi-curing of the constrained layer material, the image 3 A commercially available black electrical tape as shown is applied to the Figure 10 On the complex surface target shown in (B), and then Figure 4 Commercially available black double-sided tape shown affixed to black electrical tape. Then paste the semi-cured transparent constraining layer on the black double-sided tape, and then continue to heat it with a hair dryer at about 60°C for 25 minutes to obtain a...

Embodiment 3

[0054] Such as figure 2 As shown, the material of the transparent constrained layer in this embodiment is obtained by blending EX-20 double atmosphere A-type epoxy resin and WZH-155 alicyclic amine curing agent at a mass ratio of 1.5:1, and the material of the transparent constrained layer is made of a silica gel mold of 2.1 The transparent constrained layer with a thickness of mm is kept at 100°C for 35 minutes, and the transparent constrained layer is in a semi-cured state at this time.

[0055] During the waiting period for the semi-curing of the constrained layer material, the image 3 A commercially available black electrical tape as shown is applied to the Figure 10 On the complex surface target shown in (D), the Figure 4 Commercially available black double-sided tape shown affixed to black electrical tape. Then paste the semi-cured transparent constraining layer on the black double-sided tape, and then continue to heat it with a hair dryer at about 60°C for 20 min...

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Abstract

The invention discloses a composite rubber film used for complex shape surface multi-pas laser shock reinforcement. The composite rubber film used for complex shape surface multi-pas laser shock reinforcement is composed of an energy absorbing layer and an energy restraint layer through connection; the energy absorbing layer and the energy restraint layer are arranged on a target material successively; the energy absorbing layer rubber film comprises two material layers, and is composed through connection of a black insulated rubber tape and a black double faced adhesive tape; the energy restraint layer is a transparent restraint layer, and is formed through blending of epoxy resin and a curing agent, and curing after adhesion onto the black double faced adhesive tape at half-cured state.A plurality of times of blast of a same point on the energy absorbing layer in a plurality of times of laser shock reinforcement is caused, and over gasification is avoided; a same point of the energyrestraint layer is capable of bearing a plurality of times of black without cracking; the composite rubber film is capable of bearing multi-pas laser shock reinforcement, reinforcement effect is improved, and laser shock reinforcement pre-treatment and post-treatment are simplified.

Description

technical field [0001] The invention relates to the field of laser processing, in particular to a composite adhesive film for multi-pass laser shock strengthening treatment, which can improve the effect of laser shock strengthening, and is especially suitable for occasions where clear water cannot be used as the energy-constrained layer and the surface of the target is a curved surface shape of the case. Background technique [0002] Laser shock peening is an effective surface treatment method that can improve the surface strength and fatigue life of components. Laser shock strengthening requires an energy absorbing layer and an energy confinement layer to be arranged on the surface of the target. Currently, the energy absorbing layer is mostly made of black tape, while the energy confinement layer is mostly made of clear water. In the case where the use of water is not allowed, both the energy absorbing layer and the energy confining layer are made of solid materials. How...

Claims

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Application Information

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IPC IPC(8): C09J7/29C21D10/00
CPCC09J7/29C09J2400/263C09J2463/006C21D10/005
Inventor 夏琴香程秀全张俊豪程思竹
Owner SOUTH CHINA UNIV OF TECH
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