Device for heat treatment of coated semifinished steel products

A semi-finished and coating technology, applied in heat treatment furnaces, heat treatment equipment, coatings, etc., can solve problems such as stamping tool wear, impact on surface quality of parts and paint adhesion, and cracks on parts, and achieve the effect of preventing cross-contamination

Active Publication Date: 2016-03-16
THYSSENKRUPP STEEL EURO AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Here, especially low-melting phases such as zinc-aluminum phases form, which can lead to cracks on the component
During such a cycle, Zn-Al particles can also be found on the surface of the austenitized st

Method used

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  • Device for heat treatment of coated semifinished steel products
  • Device for heat treatment of coated semifinished steel products
  • Device for heat treatment of coated semifinished steel products

Examples

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[0027] The device for heat treatment of coated steel semi-finished product 1 according to the present invention has a continuous furnace 2 (only in figure 1 Shown in). Here, a conveying device 3 for the semi-finished steel product 1 is shown, which has a roller 4 as a conveying element. As shown in the figure, the semi-finished steel product 1 is placed on the roller 4 in a continuous furnace. The semi-finished steel product 1 is to be austenitized into an intermediate product for direct pressure hardening, and has the form of a blank.

[0028] According to the invention, the branch section 5 of the continuous furnace 2 has two conveying element groups 6,7. Here, each of the conveying element groups 6, 7 has a plurality of conveying elements designed as rollers 4, and in the branch portion 5, the steel semi-finished product 1 or is placed on the conveying elements of the first conveying element group 6, Or it is placed on the conveying element of the second conveying element gro...

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Abstract

The invention relates to a device for the heat treatment of coated semifinished steel products, comprising at least one heatable continuous furnace (2) with at least one conveying device (3) for the semifinished steel products (1), wherein the conveying device (3) has conveying elements (4) and the semifinished steel products (1) in the continuous furnace (2) lie on the conveying elements (4). According to the invention, it is ensured that, even when operation switches over between campaigns for producing differently coated semifinished steel products, interactions are largely avoided by at least one decoupling section (5) of the continuous furnace (2) having at least two groups of conveying elements (6, 7), each group of conveying elements (6, 7) having at least one conveying element (4) and the semifinished steel product (1) in the decoupling section (5) lying either on the conveying elements (4) of the first group of conveying elements (6) or the conveying elements (4) of the second group of conveying elements (7).

Description

Technical field [0001] The present invention relates to a device for heat treatment of coated steel semi-finished products. The device includes at least one heatable continuous furnace with at least one conveying device for steel semi-finished products, wherein the conveying device has Conveying elements and semi-finished steel products are placed on the conveying elements in a continuous furnace. Background technique [0002] The heat treatment of semi-finished steel products is used in particular in the austenitization process as a preparation for pressure hardening. Through austenitization and subsequent press hardening (ie, deformation and quenching of semi-finished steel products heated to about 800 to 1000°C), the semi-finished steel products formed have a martensitic structure, which results in a significant increase in The strength of the resulting semi-finished steel. [0003] In order to protect the semi-finished steel product from corrosion and oxidation during transpo...

Claims

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Application Information

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IPC IPC(8): F27B9/02B21B1/46
CPCF27B9/2407C21D9/0018C23C28/00C23C30/005F27B9/02F27B9/028F27B2009/3094
Inventor 扬科·巴尼克马里亚·科耶尔格奥尔格·帕尔马
Owner THYSSENKRUPP STEEL EURO AG
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