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Production process of white heart malleable cast iron

A production process and cast iron technology, applied in the field of white-heart malleable cast iron production process, can solve problems such as unsuitable production of white-heart malleable cast iron

Active Publication Date: 2022-03-25
TANGSHAN XINYE TECH
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention proposes a white-heart malleable cast iron production process, which solves the problem that the traditional process in the related art is not suitable for producing white-heart malleable cast iron

Method used

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  • Production process of white heart malleable cast iron
  • Production process of white heart malleable cast iron
  • Production process of white heart malleable cast iron

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Embodiment Construction

[0039] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts all involve the protection scope of the present invention.

[0040] Such as Figure 1 to Figure 9 As shown, the present embodiment proposes a white-heart malleable iron production process, including the following steps:

[0041] S1. Mixing and smelting raw materials and additives to obtain high-carbon molten iron;

[0042] S2. Casting high-carbon molten iron at a suitable temperature into a coated sand mold shell, cooling and molding to obtain a green body;

[0043] S3. Trim the burrs and gates of the formed green body;

[0044] S...

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Abstract

The present invention relates to the technical field of cast iron technology, and proposes a white-heart malleable cast iron production process, including S1. Mixing and smelting raw materials and additives to obtain high-carbon molten iron; S2. Casting high-carbon molten iron at a suitable temperature into a coated sand mold shell, cooling and forming Obtaining a shaped green body; S3. Trimming the burrs and gates of the shaped green body; S4. Performing decarburization annealing on the trimmed green body to obtain a casting; S5. Deburring and shot blasting the casting. Through the above technical solution, the problem that the traditional process in the prior art is not suitable for producing white-heart malleable cast iron is solved.

Description

technical field [0001] The invention relates to the technical field of cast iron technology, in particular to the production technology of white-heart malleable cast iron. Background technique [0002] White-heart malleable cast iron is a kind of malleable cast iron with uneven internal and external structure. The outer layer is full ferrite, and the center has pearlite and a small amount of flocculent graphite, and even residual free cementite. It has good mechanical properties and weldability. Due to the particularity of white-heart malleable cast iron, the existing ordinary cast iron production process is not suitable for the production of white-heart malleable cast iron, and a new process is needed to obtain products that meet the carbon content requirements. Contents of the invention [0003] The invention proposes a white-heart malleable cast iron production process, which solves the problem in the related art that the traditional process is not suitable for produci...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D3/04B22C9/02C22C33/06B22C15/24
CPCC21D3/04B22C9/02C22C33/06B22C15/24
Inventor 杨德军李德芳李艳君
Owner TANGSHAN XINYE TECH
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