Mould and method for preforming 45-degree lateral tee upset part and forming technique of 45-degree lateral tee
A forming process and oblique tee technology, applied in the direction of manufacturing tools, metal processing equipment, forging/pressing/hammer devices, etc., can solve the problems of low material utilization rate, long machining time, long forging cycle, etc.
Inactive Publication Date: 2016-01-06
BEIJING RES INST OF MECHANICAL&ELECTRICAL TECH +1
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Problems solved by technology
The traditional method of producing 45° oblique tees generally adopts solid free forging and subsequent machining, in which free forging requires more than 5 fires, long forging cycle, long machining time, and low material utilization rate
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[0019] see below Figure 1 to Figure 6 The mold, method and forming process of the preformed 45° oblique tee upsetting part and the forming process of the 45° oblique tee in the present invention are described in detail.
[0020] Such as figure 1 As shown, the 45° oblique tee 6 usually includes a main pipe piece 61 and a branch pipe 62 that intersect at 45 degrees and are connected to each other. The 45° oblique tee 6 can be made of metal or plastic. In the present invention, the 45° oblique tee 6 is mainly formed by the following technological process, which specifically includes the following steps:
[0021] Step 1, upsetting the blank of the 45° oblique tee;
[0022] Step 2, performing back-extrusion processing on the formed part formed in step 1;
[0023] Step 3, perforating the formed part formed in step 2.
[0024] Among them, using figure 2 The upsetting process shown in step 1 is realized by using the upsetting mold. Such as figure 2 As shown, the upsetting mo...
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The invention provides a mould and method for preforming a lateral tee upset part and a forming technique of a 45-degree lateral tee. The mould comprises a blank forming barrel with a cavity, an upsetting rod for upsetting an upset blank in the cavity, a base which is arranged in the blank forming barrel and at the bottom of the cavity and a punching bottom arranged in the base; and an opening communicated with the cavity is formed in the upper portion of the blank forming barrel, a base plane portion right facing the opening is arranged on the base, and the lower end of the upsetting rod extends into the cavity through the opening. When the step of using the mould to preform the 45-degree lateral tee upset part is finished, the distance between the bottom end of the upsetting rod and the plane portion of the base is larger than or equal to 640mm and smaller than or equal to 660mm. Thus, the height of the left side is fundamentally identical with the height of the right side of the final formed part of the 45-degree lateral tee, the casting defects of folding and cross flowing are overcome, and the final forming effect of the 45-degree lateral tee is better; and the machining allowance is small, and materials are saved.
Description
technical field [0001] The invention relates to a mold and a method for preforming a 45° oblique tee upsetting part and a forming process of a 45° oblique tee. Background technique [0002] P91 (10Cr9Mo1VNb) inclined tee is widely used in electric power, petroleum, chemical industry, machinery manufacturing, shipbuilding, national defense and other fields. As a key basic structural part, it is required to have excellent comprehensive performance under high temperature and high pressure. The high temperature stability and thermal strength of the P91 material, high deformation resistance, low plasticity and the high performance required for the oblique tee determine that the manufacture of the P91 oblique tee requires a thermoplastic processing method. The traditional method of producing 45° oblique tees generally adopts solid free forging and subsequent machining. Among them, free forging requires more than 5 fires, long forging cycle, long machining time, and low material ut...
Claims
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IPC IPC(8): B21J13/02B21J5/08B21J5/02
CPCB21J13/02B21J5/02B21J5/08
Inventor 赵恒良马晓晖翟月雯钟志平李凤娇刘维坊梁培新邱德花闫红艳
Owner BEIJING RES INST OF MECHANICAL&ELECTRICAL TECH