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Assembled slab, method for manufacturing same, and method for manufacturing clad steel material

A manufacturing method and slab technology, which are applied in the fields of assembling slabs and their manufacturing and composite steel manufacturing, can solve problems such as cracking, and achieve the effect of efficient and stable manufacturing

Active Publication Date: 2021-10-15
JFE STEEL CORP
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  • Claims
  • Application Information

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Problems solved by technology

However, the tip portion of the weld metal farthest from the outer surface of the spacer (hereinafter referred to as the deepest portion) tends to have a pear-shaped swollen shape, and as a result, cracks tend to occur in the center of the swollen shape. new question

Method used

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  • Assembled slab, method for manufacturing same, and method for manufacturing clad steel material
  • Assembled slab, method for manufacturing same, and method for manufacturing clad steel material
  • Assembled slab, method for manufacturing same, and method for manufacturing clad steel material

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Embodiment

[0060] As Invention Example 1, two base materials equivalent to SM400 (thickness 100 mm x width 1250 mm x length 2000 mm), two joint materials equivalent to SUS304 (thickness 20 mm x width 1000 mm x length 1700 mm), four base materials equivalent to SM400 Partition (thickness 40mm×width 30mm[=T 5 ], the longitudinal dimension is adjusted to be aligned with the base material), and then the alumina-based adhesive as a release material such as figure 1 Stack as shown and store in a vacuum container. The contact surface between the base material and the joining material, and the surface to be the abutting surface between the base material and the spacer are cleaned in advance by grinding with an electric sand mill.

[0061] Next, the inside of the vacuum container was made into a vacuum environment with a pressure of 0.1 Pa, laser beam welding was performed, and an assembled slab was produced. The laser output of laser beam welding was set to 30 kW, the welding speed was set to ...

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Abstract

Provided is an assembled slab (assembled slab 10) in which two sets of clad materials (clad materials 9) are arranged with mating materials (2) opposing each other and with a peeling material (peeling material 4) interposed between the mating materials, wherein spacers (spacers 5) are further arranged on the four sides of the mating materials, and butted surfaces of the spacers and base materials are welded together whereby the deepest portions (the deepest portions P1) of welded metals (welded metals 3) are formed inside the base materials, and whereby the butted surfaces (butted surfaces 8) in a range of not less than 50% and less than 100% of the thickness T5 of the spacers from a surface of the spacers are joined by the welded metals, wherein the width W (mm) of the welded metals on the surface of the base materials, the length D (mm) of a line M connecting the center of the width W of the welded metals and the deepest portions, and an angle A(degree) formed by the line M and the butted surfaces satisfy D / W>=5 and 1<=A<=15.

Description

technical field [0001] The present invention relates to an assembled slab in which a base material and a joint material are overlapped to obtain a composite steel material, a method for manufacturing the same, and a method for manufacturing a composite steel material using the assembled slab. Background technique [0002] The clad steel material is a steel material in which a plate-shaped common steel (so-called carbon steel) base material is laminated and adhered to a joining material (for example, a stainless steel plate, a titanium plate, etc.). Comparing with the case of using stainless steel plate, titanium plate, etc. alone, the clad steel material has the advantages of being cheaper and exhibiting functions such as corrosion resistance and wear resistance equivalent. Therefore, from the viewpoint of reducing material costs of various structures, the demand for clad steel materials has increased significantly in recent years. [0003] Regarding the steps of manufactur...

Claims

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Application Information

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IPC IPC(8): B23K20/04
CPCB23K20/04B23K26/242B23K26/32B23K20/227B23K20/24B23K20/26B23K26/21B23K26/1224
Inventor 冲田泰明木谷靖
Owner JFE STEEL CORP
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