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Dual-functional composite solid protective slag for stainless steel die casting

A stainless steel mould, dual-function technology, applied in casting moulds, casting molding equipment, cores, etc., can solve the problem of single solid mold slag in stainless steel mold casting

Inactive Publication Date: 2006-06-21
SHANGHAI PANLONG IND
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing stainless steel mold casting solid mold powder only has a single function of improving the surface quality of steel ingots

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0006] The chemical composition (by weight) of stainless steel mold casting composite solid mold flux is calculated as CaO 19.5Kg, Na 2 O 6.9Kg, MgO 2.3Kg, Al 2 o 3 18.8Kg, SiO 2 38.5Kg, FeO 2.5Kg, CaF 2 8.8Kg, C 2.7Kg, fineness controlled to 60 mesh (100% pass rate), stirred evenly, baked, and packaged after the finished product has a moisture content of ≤0.5%. Once the molten steel enters the rising hole at the bottom of the mold after pouring, the stainless steel mold-casting composite solid mold slag will be evenly formed into slag, forming a uniform thickness of slag coating, thereby obtaining a good surface quality of the steel ingot; the added thermal insulation material expands when heated, The expansion process pushes the solid mold slag to make it have good spreadability, while the expansion product always floats on the top of the liquid slag layer to keep warm. The head can obtain good feeding quality; when demoulding, the slag coat will fall off automaticall...

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Abstract

The present invention relates to one kind of composite solid protecting slag with double function for stainless steel cast mold, and features that the composite solid protecting slag consists of: calcium oxide 10-25 wt%, sodium oxide 4-8 wt%, magnesium oxide 15 wt%, Al2O3 10-20 wt%, silica 30-45 wt%, ferric oxide 1-3 wt%, calcium difluoride 5-10 wt%, and carbon 1-3 wt%. The present invention features that the composite solid protecting slag includes heat insulating material with low carbon content, high expansion coefficient and light expanded weight for floating and has no need of adding heating material and heat insulating material, resulting in raised steel ingot quality and steel material utilizing rate.

Description

technical field [0001] The invention relates to a stainless steel mold casting solid mold flux, in particular to a stainless steel mold casting composite solid mold flux with dual functions. The composite solid mold flux can not only improve the surface quality of steel ingots, but also improve the ingot feeding quality. Background technique [0002] At present, the general stainless steel die-casting solid mold slag only has a single function of improving the surface quality of the steel ingot, and has a poor thermal insulation effect on the head of the steel ingot. Even if the traditional best method is to use liquid slag to protect the casting, although it can effectively improve the surface quality of the steel ingot, it also only has a single function, and additional heating agents and heat insulating agents are required, and the cost is high and the process is complicated, so it is difficult to popularize and use it on a large scale. . [0003] In view of the easy-to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C1/02
Inventor 王兆达徐永斌徐兵
Owner SHANGHAI PANLONG IND
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