Protective film for axles

A technology of protective film and axle, applied in the direction of film/flaky adhesives, layered products, transportation and packaging, etc., can solve the problems of complicated inspection, difficult to remove paint coating, harmfulness, etc., and achieve the goal of reducing downtime Effect

Inactive Publication Date: 2006-08-23
SOC NAT DES CHEMINS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This lacquer coating is difficult to remove without chemical etching or shot peening, complicating inspection of the condition of the axle by magnetic or ultrasonic testing
Removal of paint can emit etchants or solvents that are harmful to the health of the operator

Method used

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  • Protective film for axles
  • Protective film for axles
  • Protective film for axles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Example 1: Method of Coating Type 2 or Type 3 Axles

[0065] Axle generally refers to the straight portion from the axle and the terminal portion constituting the fillet of the axle. When cracks develop on the axle, the cracks appear first on these rims.

[0066] First, a layer of aluminum adhesive is applied to the rim of the axle. This layer is applied with a side that has an acrylic adhesive, allowing it to adhere to the rim.

[0067] followed by figure 1 The films shown are applied to the entire axle, ie to the straight portion of the axle and to the rim. Thus, the rim has two successively applied layers of aluminum adhesive.

[0068] After the type 2 or type 3 hub is completely covered by the film 1, adhesive strips are attached longitudinally on the edges of the butyl mastic layer 3, so that the terminal portions of the film 1 are attached. With such a connection, the membrane 1 will not fall off during use. It is also possible to form the film 1 directly on...

Embodiment 2

[0070] Example 2: Method of coating type 1 axles

[0071] In the same way as in the method of coating type 2 or type 3 axles, a layer of aluminum adhesive is first applied to the rim and then as figure 2 or image 3 Film 1 was applied to the entire axle as shown.

[0072] Thus, the rim has two successively applied layers of aluminum adhesive. After the type 1 axle is completely covered by the membrane 1 , the adhesive is applied to the edge of the polyurethane layer 4 . The adhesive was cold applied manually using a two-component spray gun, joining the terminal portions of the film. The adhesive composed of polyurethane can prevent the film 1 wrapped on the axle from falling off during the use. By applying the different layers one after the other, it is possible to arrange the membrane 1 directly on the axle.

[0073] During inspection of the condition of the axle by magnetic or ultrasonic testing, a biodegradable solvent that dissolves the adhesive may be applied. Afte...

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Abstract

The invention provides a protective film 1 for a wheel axle, the film 1 comprising at least: a first layer 2 capable of being adhered to the wheel axle, comprising a compound selected from aluminum and elastomers, on which layer an adhesive and a second layer 3 comprising at least one adhesive compound in the form of a mastic-type paste, which compound is applied to the side of the first layer 2 free of adhesive compounds.

Description

technical field [0001] The present invention relates to a protective film for wheel axles, especially for railway vehicle wheel axles, which has impact resistance and corrosion resistance. Background technique [0002] Rolling components, such as wheels, axles, wheel sets and axle boxes, always suffer from mechanical problems related to various physical phenomena. [0003] Wheel axles are generally classified into several types based on the physical conditions to which they are exposed. Type 1 axles are used on railway vehicles operating at speeds in excess of 200 km / h and exposed to atmospheric corrosion and strong mechanical shocks. These mechanical impacts are caused by projectiles of different sizes, especially ballast fragments striking the axle. This impact due to such impact objects occurs at speeds above 200 km / h. These impacts can damage the axle, causing cracks and cracks in its rim. [0004] In order to avoid these disadvantages, Type 1 axles are generally cov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B33/00C09J7/02B32B25/00B32B25/02B32B7/12
CPCB61F5/50
Inventor T·盖纳尔P·图弗诺
Owner SOC NAT DES CHEMINS
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