Hollow tube forming process

A forming process and hollow tube technology, applied in metal rolling and other directions, can solve the problem of high defective rate of hollow balls, and achieve the effects of easy control of extension direction, fast coating operation, and reduction of defective rate.

Active Publication Date: 2021-09-21
深圳市鸿亨珠宝首饰有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the existing processing method for preparing hollow balls, the sheet is rolled into a tube shape, and then the gaps of the tubes are welded together by welding, and then the welded tubes are passed through at least two round hole wire plates Remove the welding traces on the outside of the pipe, but although the welding traces are eliminated, the metal material at the weld is likely to extend in an unknown direction during the later stage of pressing, so that the defective rate of the processed hollow balls is lower high

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment one: a kind of coating device for coating lubricating liquid, refer to the attached figure 1 And attached figure 2 , including a cylinder 1 with a hollow interior, a coating sleeve 2 sleeved outside the housing 1 , an absorbing sleeve 3 inside the housing 1 , and a drawstring 5 fixedly connected to one end of the housing 1 . The outer side of the housing tube 1 is provided with a number of relief holes 12 evenly distributed around the axis of the housing cylinder 1, and a connection block 4 is arranged in the relief hole 12, and the side of the connection block 4 close to the absorption sleeve 3 is fixedly connected with the absorption sleeve 3, The side of the connection block 4 close to the coating sleeve 2 is fixedly connected with the coating sleeve 2 . The coating sleeve 2, the connecting block 4 and the absorption sleeve 3 are all made of sponge material, and the outer diameter of the coating sleeve 2 is slightly larger than the inner diameter of the ...

Embodiment 2

[0038] Embodiment two: a hollow tube molding process, comprising the following steps:

[0039] a. Raw material melting: select raw materials with a gold content greater than or equal to 99.99%, and heat the raw materials to 1150°C to make the raw materials into a molten state;

[0040] b. Pouring cylindrical billet: inject molten raw material into the casting mold for molding, after pouring is completed, cool the raw material to room temperature naturally, and then take out the formed cylindrical billet from the mold;

[0041] c. Billet heating: place the cylindrical billet in the heating furnace for heating, heat the cylindrical billet to 900°C, after heating to the specified temperature, keep the cylindrical billet in the heating furnace for 600s, after the heat preservation is completed, take the billet out of the heating furnace; During the heating process, a walking heating furnace is used for heating;

[0042]d. Piercing and rolling: After the billet is taken out of...

Embodiment 3

[0048] Embodiment three: a hollow tube molding process, comprising the following steps:

[0049] a. Raw material melting: select raw materials with a gold content greater than or equal to 99.99%, and heat the raw materials to 1175°C to make the raw materials into a molten state;

[0050] b. Pouring cylindrical billet: inject molten raw material into the casting mold for molding, after pouring is completed, cool the raw material to room temperature naturally, and then take out the formed cylindrical billet from the mold;

[0051] c. Billet heating: place the cylindrical billet in the heating furnace for heating, heat the cylindrical billet to 925°C, after heating to the specified temperature, keep the cylindrical billet in the heating furnace for 800s, after the heat preservation is completed, take the billet out of the heating furnace; During the heating process, a walking heating furnace is used for heating;

[0052] d. Piercing and rolling: After the billet is taken out...

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Abstract

The invention discloses a hollow tube molding process, relates to the technical field of jewelry ball processing, and solves the problem of high defective rate of hollow ball beads in the prior art. The main points of the technical solution include the following steps: a. raw material melting; b. Pouring cylindrical blank; c. Blank heating; d. Piercing and rolling; e. Annealing after rolling; f. Apply lubricant; g. Stretching and rolling; h. Cleaning and drying; i. Tube annealing, through piercing and then stretching and rolling, so that there is no welding position in the hollow tube of the prepared gold material, so that the extension direction of the metal material everywhere is easy to control during pressing, thereby reducing the The defective rate of the processed hollow cylinder.

Description

technical field [0001] The invention relates to the technical field of jewelry ball processing, more specifically, it relates to a hollow tube forming process. Background technique [0002] With the continuous improvement of people's living material level, people's pursuit of spiritual life is constantly improving. No matter men, women, old or young, they all like to decorate themselves with jewelry. [0003] Among the bead jewelry, there is a kind of hollow bead with openings at both ends about 4-10mm in diameter, which is basically processed by cutting and grinding after pressing the bead with a round tube, that is, first processing the sheet into a hollow bead. A round tube with basically the same diameter of the cylinder, and then put the round tube in the mold to press the beads. When pressing the beads, the mold cavity of the mold is a series of cavities with the same diameter as the hollow cylinder arranged in a straight line. Extrude a string of round beads connecte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C37/06B21B19/04B21C1/24B21C9/00B21C9/02
CPCB21B19/04B21C1/24B21C9/00B21C9/02B21C37/06
Inventor 郑锦陈乃彦
Owner 深圳市鸿亨珠宝首饰有限公司
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