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Coating material and surface treated metal plate

A technology of paint and stearic acid metal soap, which is applied in the field of surface treatment of metal plates and paints with such properties, can solve problems such as rust, die bite, and reduced cooling effect of stamping oil

Inactive Publication Date: 2005-01-12
JFE STEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the increase in the number of stamping forming, the cooling effect of stamping oil decreases, and there are also fractures or mold seizures.
In addition, all the surface-treated metal sheets described in the above-mentioned bulletin, if used in a corrosive environment, may rust even if a rust inhibitor is added, and there is still room for improvement in terms of rust resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0046] On the surface of the degreased steel strip (thickness 1.2mm), the coating composition shown in Table 1 is applied to both sides, and the weight of the dry film used on each side is 3.0g / m 2 , so that the plate temperature after 5 seconds from the start of drying becomes 60° C., it is dried using a hot air dryer. Then, apply anti-rust oil (16.cSt / 40℃) 1.5g / cm on both sides 2 , to make a test piece.

[0047] The test pieces thus obtained were evaluated for their lubricity, wear resistance, press formability, temporary rust prevention and alkali release properties. In addition, only film dryness was evaluated by drying with hot air at 90° C. for 2 seconds, and the results are summarized in Table 2. Evaluation of each characteristic is as follows.

[0048] (1) Lubricity

[0049] The initial coefficient of dynamic friction was measured with a dynamic friction (Bouden) tester under the following conditions.

[0050] The curvature of the spherical indenter at the front e...

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PUM

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Abstract

The present invention provides a coating that includes a thermoplastic resin having a glass transition point of more than 100° C. and an acid value of from 20 to 350 mg-KOH / g, a metallic soap of metal stearate, an anti-galling agent, and a surface-treated metal sheet having a film of this coating. The coating according to the present invention has the superior durability of the film, in particular, wear resistance and peel resistance. The surface-treated metal sheet having the film of this coating has superior press formability, in particular, galling resistance and lubricity, and further, a temporary antirust property and alkaline solubility of the film even in a high temperature environment caused by severe ironing.

Description

technical field [0001] The present invention relates to a paint for a metal plate and a metal plate for surface treatment using the paint. In particular, it relates to a surface-treated metal sheet having excellent press formability and antirust properties even in severe ironing and deep drawing, and a paint to impart such properties. technical background [0002] Conventionally, mechanical driving force transmission parts that require strength, such as clutch guide rods used in automatic transmissions for automobiles, have complicated shapes and are manufactured by cold forging. However, in recent years, due to the slow production speed of cold forging, such parts have begun to be produced by stamping. However, since press forming is accompanied by severe thinning and deep drawing, very high press formability, particularly high galling resistance, is required for the metal sheet used as a raw material. Therefore, after the bonding treatment is performed on the metal plate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/09C08K5/098C09D5/08C09D7/61
CPCC09D7/1216C08K3/0083C09D125/14C09D5/08C08K3/32C09D5/086C08K5/098C08K13/02C08L2666/54C09D7/61C08K3/105
Inventor 樋贝和彦京野一章
Owner JFE STEEL CORP
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