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Y-shaped tee-joint multi-direction die forging process and die

A multi-directional die forging and three-way technology, applied in the direction of manufacturing tools, metal processing equipment, forging/pressing/hammer devices, etc., can solve the problems of material waste, high time cost, high production cost, etc., and achieve energy saving and production cycle Effects of shortening, increased service strength and corrosion resistance

Inactive Publication Date: 2018-04-06
SHANGHAI CHANGQIANG POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the large tonnage of the product, the overall forged Y-shaped tee can only be produced by free forging. Although this process can meet the product strength and integrity requirements, the material utilization rate is between 20% and 30% (such as 4 More than 18 tons of materials are required per ton of product), resulting in a great waste of materials and high production costs
Moreover, the production cycle of a single product is about 50 days (including the purchase of raw materials), and the time cost is high

Method used

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  • Y-shaped tee-joint multi-direction die forging process and die
  • Y-shaped tee-joint multi-direction die forging process and die
  • Y-shaped tee-joint multi-direction die forging process and die

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Embodiment Construction

[0023] In the description of the present invention, it should be understood that the terms "radial", "axial", "upper", "lower", "top", "bottom", "inner", "outer", etc. indicate the orientation Or the positional relationship is based on the position or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the pointed device or element must have a specific orientation, be constructed and operated in a specific orientation Therefore, it cannot be understood as a limitation of the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "setting", and "connection" should be understood in a broad sense, for example, it can be a fixed connec...

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Abstract

The invention relates to the technical field of producing and manufacturing of large firepower power station Y-shaped tee-joint forge parts, in particular to a Y-shaped tee-joint multi-direction die forging process and a die. The die comprises a left die body and a right die body which are symmetric; a die cavity is formed between the left die body and the right die body and comprises a main cavity, a left inclined branch cavity and a right inclined branch cavity; the inner face of the die cavity is matched with the outer structure of a Y-shaped tee joint, and insert blocks are arranged in theleft inclined branch cavity and the right inclined branch cavity. According to the Y-shaped tee-joint multi-direction die forging process, on the premise of ensuring forge part integrality, the material utilization rate, strength and machining efficiency are improved, the material utilization rate reaches about 80%, and the total production period can be reduced by at least 26%.

Description

Technical field [0001] The invention relates to the technical field of manufacturing Y-shaped three-way forgings for large thermal power stations, in particular to a Y-shaped three-way multi-directional die forging process and die. Background technique [0002] The Y-type tee is an important pipe fitting for the main body of the power station boiler. It is used to transmit and divert high-temperature and high-pressure water vapor. Therefore, the pipe strength and medium- and high-temperature creep performance are relatively high. Therefore, in addition to the use of special materials, the Y-shaped tee has further requirements for its processing methods. Generally, the Y-type tee for power stations weighs several tons (take DN800 as an example, weighs about 4 tons). The original production method is to use three pipes for welding. The strength of the welded joints poses a safety hazard to the long-term use of the pipeline. In recent years, a free forging + machining method using ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/00B21J5/02B21J13/02B21K1/16
CPCB21J5/002B21J5/025B21J13/02B21K1/16B21J5/02B21K1/14F16L41/023
Inventor 周菊明
Owner SHANGHAI CHANGQIANG POWER
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