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A kind of preparation method of low-temperature ferritic nodular cast iron attached casting test block

A technology of nodular cast iron and ferrite, which is applied in the field of low-temperature ferritic nodular cast iron attached casting test block preparation, can solve the problems of non-compact structure and shrinkage porosity, and achieve the effect of compact structure and complete and uniform performance

Active Publication Date: 2019-04-09
ASIMCO INT CASTING CO LTD SHANXI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The attached casting test block is only cooled by cold iron, and there is no molten iron for feeding, so the structure is not dense and contains shrinkage porosity.

Method used

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  • A kind of preparation method of low-temperature ferritic nodular cast iron attached casting test block
  • A kind of preparation method of low-temperature ferritic nodular cast iron attached casting test block
  • A kind of preparation method of low-temperature ferritic nodular cast iron attached casting test block

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Embodiment Construction

[0023] Such as figure 1 , 2 , 3, 4 shown, a kind of low-temperature ferritic nodular cast iron attached casting test block preparation method, use gating system 8, casting mould, attached casting test block mold 4; The uppermost end of described attached casting test block mold 4 passes The test block sprue connecting channel 2 is connected with the casting 1, an overflow channel 3 is established above the attached test block mold 4, and a cold iron 5 is placed at the performance place 9 of the attached test block mold 4 on the lower side of the attached cast test block mold. Casting test block mold 4 is placed vertically.

[0024] The attached casting test block mold 4 is placed vertically, and the test block gate connecting channel 2 is located at the uppermost end of the attached casting test block mold 4. This design is conducive to the sufficient flow of molten iron into the attached casting test block mold 4, and overcomes the Insufficient fluidity of molten iron leads...

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Abstract

The invention relates to a casting process, in particular to a low-temperature ferrite ductile cast iron auxiliary casting test block preparation method. In order to solve the problem of totally consistent performances of an auxiliary casting test block and a casting, the invention proposes the low-temperature ferrite ductile cast iron auxiliary casting test block preparation method. The low-temperature ferrite ductile cast iron auxiliary casting test block preparation method uses a pouring system, a casting mold and an auxiliary casting test block mold; the uppermost end of the auxiliary casting test block mold is connected with the casting through a test block sprue connecting way; an overflow way is formed above the auxiliary casting test block mold; cold iron is put in the auxiliary casting test block performance taking place on the lower side of the auxiliary casting test block mold; and the auxiliary casting test block mold is vertically placed. Through transformation, a prepared auxiliary casting test block and a single casting Y-shaped test block have similar performances to reflect real casting performances.

Description

technical field [0001] The invention relates to a casting process, in particular to a method for preparing a low-temperature ferritic nodular cast iron attached casting test block. Background technique [0002] Ductile iron is widely used in the machinery manufacturing industry. The low-temperature ferritic ductile iron motor end cover is mainly used in high-speed train motors. It is an important part of railway transportation components. It drives carriages carrying thousands of passengers. Mechanical properties also require high quality stability and consistency. Therefore, it is necessary to strictly test the performance of the cast test block. Among them, the performance of the cast test block of the product should meet the customer's technical requirements: the casting complies with GB / T1348-2009 and TB / T1465-93, and the performance test adopts the conjoined cast sample: Tensile strength: Rm≥400(Mpa), yield strength: Re0.2≥240(Mpa), elongation: A≥18%, impact energy: Ak...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C9/08B22D27/04B22C9/02C21C1/10C21D5/00G01N1/28C22C37/04C22C37/10
CPCB22C9/02B22C9/08B22D27/04C21C1/10C21C1/105C21D5/00C22C37/04C22C37/10G01N1/28
Inventor 薛献来
Owner ASIMCO INT CASTING CO LTD SHANXI
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