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Manufacturing process of durable diesel engine block

A diesel engine and system technology, which is applied in the field of diesel engine body manufacturing technology, can solve the problems of difficult casting production and difficult to obtain vermicular graphite iron stably, and achieves the effects of good fluidity, narrow crystallization range and long service life.

Inactive Publication Date: 2018-12-07
如皋市欧马机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the difficulty in the casting production of compacted graphite cast iron, although some foundry manufacturers produce compacted graphite cast iron, it is difficult to stably obtain compacted graphite cast iron with high creeping rate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] The present invention will be further described below in conjunction with embodiment.

[0011] A process for manufacturing a durable diesel engine body, comprising the following steps:

[0012] (1) Batching is carried out according to the formula, and the raw materials are mixed and smelted.

[0013] (2) Cover the bottom of the smelted raw material.

[0014] (3) Add the remaining slag-accumulating agent to the smelted smelting liquid to remove the slag, add the remaining inoculant to inoculate with the flow during the rushing process; and then pour to obtain a single-cylinder diesel engine body, wherein the smelting temperature is 1200°C -1680°C, the pouring temperature is 1100°C-1650°C.

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PUM

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Abstract

The invention relates to a manufacturing process of a durable diesel engine block. The manufacturing process comprises the steps: preparing ingredients according to a formula, and mixing and smeltingraw materials; bottoming up the smelted raw materials; adding the retaining slag conglomeration agent into smelting liquid after being smelted for removing slag, and adding the retaining inoculant formetal-stream inoculation in an inrushing process; and conducting pouring, and thus obtaining a single-cylinder diesel engine block. The single-cylinder diesel engine block has the characteristics ofsmall tendency of shrinkage porosity and long service life. The invention also provides a preparation method of the single-cylinder diesel engine block, and the process is reasonable.

Description

technical field [0001] The invention relates to a durable diesel engine body manufacturing process, in particular to a durable diesel engine body manufacturing process. Background technique [0002] In the prior art, high-strength gray cast iron is mostly used for casting single-cylinder diesel engine bodies, such as gray cast iron HT200, gray cast iron HT250, gray cast iron HT300, etc. In actual use, the single-cylinder diesel engine body made of gray iron often has thermal fatigue cracks, which is determined by the characteristics of gray cast iron. Since the elongation of gray iron is almost zero, the thermal shock resistance is poor. The tensile strength of vermicular graphite cast iron is higher than that of general high-strength gray cast iron, it has a certain elongation, and its fatigue resistance is better than that of general high-strength gray cast iron. However, due to the difficulty in the casting production of compacted graphite cast iron, although some foundr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C33/08
CPCC22C33/08
Inventor 陈修玲
Owner 如皋市欧马机械制造有限公司
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