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Segmented ellipsoidal head forming method

A molding method and technology for elliptical heads, which are applied in the field of slicing elliptical head molding, can solve the problems that the head cannot be fabricated as a whole, the production cycle is long, and the processing cost is high, so as to save the cost of heating and heat treatment, and shorten the production cycle. , the effect of improving competitiveness

Pending Publication Date: 2020-06-02
袁明运
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the large diameter of the head, which is limited by the production capacity and transportation capacity of the equipment, the head cannot be produced as a whole. Therefore, the head is made in pieces, pre-assembled, marked and shipped in pieces. However, the melon petal molds currently produced are all passed After heating, the whole is hot-pressed and formed, and subsequent heat treatment is required, the production cycle is long, and the processing cost is high

Method used

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  • Segmented ellipsoidal head forming method
  • Segmented ellipsoidal head forming method
  • Segmented ellipsoidal head forming method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A method for forming a sliced ​​elliptical head, comprising the following steps.

[0032] Step 1, making the first melon petal mold 3 and the second melon petal mold 4 for processing melon petals 2 according to the top circle 1 and the design drawings;

[0033] Step 2. Cooperate with the first upper mold 31 and the second lower mold 32 of the first melon petal mold 3 to press out the melon petal slices containing large arcs at 0°C. Before pressing, the first upper mold 31 and the second lower mold The surface of the mold 32 is polished and cleaned;

[0034] Step 3: Cooperate the second upper mold 41 and the second lower mold 42 of the melon petals in the step two by the second upper mold 41 and the second lower mold 42 of the second melon petal mold 4 to suppress a small arc at 0°C to obtain the melon petals 2. Before pressing, the second The surfaces of the upper mold 41 and the second lower mold 42 are polished and cleaned;

[0035] Step 4, according to the design d...

Embodiment 2

[0040] A method for forming a sliced ​​elliptical head, comprising the following steps.

[0041] Step 1, making the first melon petal mold 3 and the second melon petal mold 4 for processing melon petals 2 according to the top circle 1 and the design drawings;

[0042] Step 2. Cooperate with the first upper mold 31 and the second lower mold 32 of the first melon petal mold 3 to press out the melon petal slices containing large arcs at 20°C. Before pressing, the first upper mold 31 and the second lower mold The surface of the mold 32 is polished and cleaned;

[0043] Step 3: Cooperate with the second upper mold 41 and the second lower mold 42 of the second melon petal mold 4 to press the melon petals in the step two to form a small arc at 20°C to obtain the melon petals 2. Before pressing, the second melon petals The surfaces of the upper mold 41 and the second lower mold 42 are polished and cleaned;

[0044] Step 4, according to the design drawing, the melon petal 2 in the st...

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Abstract

The invention relates to a segmented ellipsoidal head forming method, and belongs to the technical field of head forming. The segmented ellipsoidal head forming method comprises the following steps that a first arched petal mold and a second arched petal mold which are used for machining arched petals are produced according to a top circle and design drawings; arched petal segments containing large arcs are pressed by matching of a first upper mold and a second lower mold of the first arched petal mold; the arched petal segments in the step 2 are pressed into arched petals with small arcs by matching of a second upper mold and a second lower mold of the second arched petal mold; the arched petals in the step 3 are marked and cut according to the design drawings; the cut arched petals are detected, and then cuts are polished; the modified arched petals are pre-grouped; and the qualified products after grouping are split and then packaged separately. According to the segmented ellipsoidal head forming method, the arched petals are produced through two cold press moldings, the overall heating and heat treatment costs of the head arched petals are saved, the production cost is lowered,meanwhile the production period of the arched petals is shortened, and the competitiveness of a production company is improved.

Description

technical field [0001] The invention relates to the technical field of split head forming, in particular to a method for forming segmented elliptical heads. Background technique [0002] In recent years, with the increasing demand for PTA (purified terephthalic acid) products in domestic and foreign markets, the scale of PTA equipment has become larger and larger, with an annual output of tens of thousands of tons to hundreds of thousands of tons. up to one million tons. The PTA crystallizer is the key equipment of the PTA plant. Due to many reasons such as large diameter, high and thick cylinder, belt stirring, and high design pressure, the equipment used to rely on imports. In recent years, with the rapid development of the domestic equipment manufacturing industry and the improvement of technology Continuous innovation, the production of the equipment has been localized. [0003] The head is one of the important pressure components of the PTA crystallizer. It not only d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 袁明运张义海
Owner 袁明运