Forging process of large tee and large skew tee

An oblique three-way and large-scale technology, applied in the field of forging and pressing production process of large-scale three-way, can solve the problems of high energy consumption, low utilization rate of raw materials, long processing time, etc., achieve energy saving and consumption reduction production efficiency, improve internal quality and mechanics performance, the effect of improving production efficiency

Active Publication Date: 2010-04-21
HEBEI FOCUS PIPING
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  • Abstract
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  • Claims
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Problems solved by technology

[0003] The purpose of the present invention is to provide a large-scale tee forging process to solve the problems of low raw material utilization, long processing time and high energy consumption in the prior art

Method used

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  • Forging process of large tee and large skew tee
  • Forging process of large tee and large skew tee
  • Forging process of large tee and large skew tee

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Embodiment Construction

[0024] The structure of a kind of oblique tee that adopts process of the present invention to produce is as figure 1 As shown, the main diameter is 300-325mm, and the wall thickness is about 50-75mm.

[0025] see figure 2 , the forging process of large-scale tee A produced by forging press of the present invention comprises the following operations:

[0026] 1. Use an electric saw to cut out the forging billet that has passed the re-inspection according to the size of the drawing. The shape of the billet is a cylinder [the material of the billet is given as an example, because the heating temperature below is related to the material].

[0027] 2. Put the billet in the heating furnace, heat up to 1200°C, and the heating rate is 5°C / min.

[0028] 3. Install the left push head 6 and the right push head 9 with bolts on the top of the left cylinder 5 and the right cylinder 10 of the 20000T frame type multi-directional mold liquid forging press, and combine the upper and lower di...

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Abstract

The invention relates to a forging process of a large tee and a large skew tee, which comprises the steps of: putting cut blanks in a heating furnace to heat to 1200 DEG C; preheating a forging die to 200-250 DEG C, respectively coating water base graphite and glass lubricant on the forging die and the cut blanks; putting the cut blanks on a multi-direction die liquid forging press mould, moving an upper cylinder to enable an upper die to mutually press a lower die; starting an upper oil cylinder, a left oil cylinder and a right oil cylinder of a forging press for forging; releasing pressure to move the mould after molding by the forging die, taking a semi-finished product out to be put into a heat treatment furnace for furnace cooling and annealing, carrying out heat treatment, nondestructive recheck and mechanical behavior check according to the steel material requirement, and preparing for the next machining; and machining the treated semi-finished product according to the drawing requirement. The invention has the advantages of reducing energy resources and improving the production efficiency.

Description

technical field [0001] The invention relates to a large-scale tee forging production process, which is mainly used for the production of straight and oblique tees below DN1400. Background technique [0002] Large straight tee and inclined tee products are indispensable products in electric power and chemical equipment. After using this product in the pipeline installation design, the layout of the pipeline will be simpler and more reasonable. Therefore, it is also a very important product in the pipeline equipment industry. The tee made of metal materials is in the electric power standard (GD87-1101 or GD-2000) and the petrochemical standard (SH3410 forged steel socket welded pipe fittings), the original manufacturing process is the standard for small-diameter and large-diameter thin-walled standard pipe fittings Very practical and normative. However, it is very complicated to manufacture large-diameter thick-walled, high-temperature, high-pressure, ultra-large thick-walle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21K1/16B21J5/02B21J13/02B21J1/06B21J3/00
Inventor 赵伟星
Owner HEBEI FOCUS PIPING
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