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A method for forging special-shaped forgings of the filter screen main body of a thermal power unit

A technology for thermal power units and forgings, applied in the field of forging, can solve the problems affecting the quality and service life of forgings, incomplete metal flow, long processing time, etc., and achieve the effect of reducing the number of production, changing the turning process, and improving the strength and toughness.

Active Publication Date: 2018-04-24
四川民盛特钢锻造有限公司
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Problems solved by technology

The main body of the current thermal power unit filter screen is a special-shaped ring. The forging process is to first use a straight mandrel to roll the forging into a ring, and then process the ring into the required shape by turning. During the processing, it will cause A large amount of blanks are wasted, the processing time is long, the work efficiency is low, and the internal metal flow of the forging after turning is incomplete, which affects the quality and service life of the forging

Method used

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  • A method for forging special-shaped forgings of the filter screen main body of a thermal power unit
  • A method for forging special-shaped forgings of the filter screen main body of a thermal power unit
  • A method for forging special-shaped forgings of the filter screen main body of a thermal power unit

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Embodiment

[0024] like Figure 1-Figure 3 As shown, the forging method of the special-shaped forging of the filter screen main body of the thermal power unit disclosed by the present invention comprises the following steps:

[0025] Step 1) Blank making: According to the requirements of the main body of the filter screen of the thermal power unit, the forging blank is made at room temperature, and then the forging blank is subjected to upsetting at a temperature of 1050°C-1070°C, and then the first elongation is carried out;

[0026] Step 2) Punching, elongation, and shaping: Punch the original billet after upsetting, and carry out the second elongation of the forging according to the special-shaped requirements of the main body of the filter. The side wall is shaped to make it meet the requirements of the finished product;

[0027] Step 3) Leveling: After the side wall shaping is completed, the end face of the forging is overall leveled at one time to make it meet the requirements of t...

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Abstract

The invention discloses a forging method of a special-shaped forged piece of a thermal power unit filter screen main body. The method comprises the following steps: 1) blank manufacturing, including feeding material according to the requirement of the thermal power unit filter screen main body, manufacturing a forged piece blank at normal temperature, and upsetting and drawing the forged piece blank at 1,050 DEG C; 2) punching, drawing and shaping, including performing high-pressure punching of the upset blank, drawing the forged piece according to the special shape requirement of the filter screen main body, and then shaping the side wall of the forged piece; 3) leveling, including integrally leveling the end surface of the forged piece once; and 4) reaming forming, including reaming the forged piece with a special-shaped core rod to obtain the finished special-shaped forged piece. In the reaming process of the method, the dedicated special-shaped core rod is used to form the forged piece once, and turning machining is omitted, so that blank waste is waste, the machining time is shortened, and the metal flow in the forged piece is integral so as to enhance the strength and toughness of the forged piece.

Description

technical field [0001] The invention relates to the field of forging, in particular to a forging method for a special-shaped forging of a filter screen main body of a thermal power unit. Background technique [0002] The main body of the filter screen in 1000MW ultra-supercritical thermal power generator equipment is an important pressure-bearing part, which needs to meet specific requirements such as load and temperature. The main body of the current thermal power unit filter screen is a special-shaped ring. The forging process is to first use a straight mandrel to roll the forging into a ring, and then process the ring into the required shape by turning. During the processing, it will cause A lot of blanks are wasted, the processing time is long, and the work efficiency is low. Moreover, the internal metal flow of the forging after turning is incomplete, which affects the quality and service life of the forging. Contents of the invention [0003] In order to overcome th...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 许开前张建万里扬
Owner 四川民盛特钢锻造有限公司
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