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Making method of steel casting mould of steam turbine

A technology of steam turbines and production methods, applied in the direction of casting molds, casting mold components, manufacturing tools, etc., to achieve the effects of saving production costs, shortening production cycles, and utilizing storage space

Active Publication Date: 2014-11-26
KOCEL STEEL
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of the prior art, provide a unique method, reduce the cost of mold manufacturing, shorten the production cycle, and solve the problem of mold inventory and a kind of manufacturing method of steam turbine casting steel mold

Method used

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  • Making method of steel casting mould of steam turbine
  • Making method of steel casting mould of steam turbine
  • Making method of steel casting mould of steam turbine

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Embodiment Construction

[0028] A method for manufacturing a steel casting die for a steam turbine, characterized in that: the method comprises the following steps:

[0029] a. Establish the digital model of the steam turbine casting mold, such as figure 2 Take the digital model of the mold as an example, the outline size is 3339×2619×1444mm;

[0030] b. Such as image 3 Shown: Make the lugs, umbilicus and ribs on the digital model of the mold into loose blocks;

[0031] c. The main body of the mold depends on the structure and wall thickness of the main body of the mold, such as Figure 4 Shown: divided into 5 segments;

[0032] d. Assemble the five-section main body mould, and the loose part is determined to use the lost foam or wooden structure according to the number of times of use. Within 3 times of use, it is made of lost foam, and if it is used more than 3 times, it is made of wooden structure; between the loose block and the main body, the male and female buckles are used for position...

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Abstract

The invention relates to a making method of a mould of a steam turbine, and particularly relates to a making method of a steel casting mould of a steam turbine. The making method is characterized by comprising the following steps: establishing a digital-analog of a casting mould of the steam turbine, making lifting lugs, bosses and rib plates on the digital-analog of the mould into loose pieces, separating a mould main body into five sections according to the structure and the difference of wall thicknesses of the mould main body, assembling five sections of the mould main body, and thus finishing the assembly of the mould. The making method disclosed by the invention is special; the making cost of the mould is lowered, the production period is shortened, and the problems of inventory and the like of the mould are solved.

Description

technical field [0001] The invention relates to a manufacturing method of a steam turbine mold, in particular to a manufacturing method of a steam turbine cast steel mold. Background technique [0002] In the traditional manufacturing of steam turbine castings, molds are made separately for each product, and the mold is stacked with wood as a whole, as shown in Figure 1: This method has the following disadvantages: 1) The daily production of steam turbine steel castings, On average, only 1~3 sets of each product are produced, and the mold cost accounts for 20% of the entire casting production cost, resulting in low profit in the production of steam turbine steel castings; 2) The production cycle of steam turbine steel casting molds is as long as 50 days, and customers The production cycle of castings is required to be about 150 days, and the production cycle of traditional molds is too long, resulting in too tight production cycle of castings; 3) The production method of tra...

Claims

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Application Information

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IPC IPC(8): B22C9/22B22C9/02
Inventor 张立文罗永建李惠东周树杨赵玉利程亚军
Owner KOCEL STEEL
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