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Method for producing zinc alloy buckle type valve cock

A manufacturing method, zinc alloy technology, applied in the direction of manufacturing tools, other manufacturing equipment/tools, etc., can solve the problems of difficulty in controlling the sequence of copper alloys, increasing the oxide layer on the surface of parts, and destroying the mechanical properties of materials, etc., to achieve perfect use Improved performance, consistency, and good interchangeability

Inactive Publication Date: 2007-07-04
SHANGHAI BAOLONG AUTOMOTIVE CORP
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

The loading and unloading of this process is mainly manual operation, and the time to process one piece at a time is about 30s, so the production capacity is relatively low
[0004] In batch production, the parts heated in the electric furnace have sequential requirements in use, that is, the residence time requirement of each part in the critical temperature environment. Exceeding the residence time will lead to the increase of the oxide layer on the surface of the part, and the internal structure of the material. become larger, destroying the original mechanical properties of the material, or even scrapping
[0005] The operating characteristic of this process is that the furnace door needs to be opened once every time the material is loaded, and the entry of air will easily cause the increase of the oxide layer on the surface of the parts, which will bring disadvantages to the extrusion
In addition, it is difficult to control the sequence of the copper alloys heated in the electric furnace, which may easily cause overburning of some parts.
[0006] This is the main limitation in the manufacture of copper valves, and the technical process is difficult to improve

Method used

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Embodiment Construction

[0022] The present invention will be further described below in combination with specific embodiments.

[0023] A method for manufacturing a zinc alloy snap-in valve, the method includes the following process steps: melting zinc alloy material, pressure casting forming, turning length, drilling through hole φ3.85, sleeve 8V1 external thread (using 8V1 die), turning Core cavity, tapping internal thread 5V1 (with 5V1 tap), surface galvanized, mouth body and rubber vulcanized together, mold ejection, core loading, air tightness testing, capping, packaging, storage.

[0024] Zinc alloy die-casting process in the above method:

[0025] 1. Adopt 30T hot pressure die-casting machine.

[0026] 2. The melting point is set at 420°C.

[0027] 3. The mold is designed in the form of four guide pillars to ensure the mold clamping accuracy of the upper and lower molds. At the same time, there are material channels and cooling water channels.

[0028] 4. Filling time: According to the char...

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Abstract

The invention discloses a making method of zinc alloy button-typed valve cock, which comprises the following steps: dissolving zinc alloy material; casting; shaping; turning length; drilling; casing the screw; turning cavity; plating zinc on the surface; sulfurizing mouth and rubber; unloading mould; loading core; detecting air impermeability; loading nut; packing; storing.

Description

technical field [0001] The invention relates to a manufacturing method of auto parts, in particular to a manufacturing method of a buckle-type automobile tire valve made of zinc alloy and rubber. Background technique [0002] On the existing car tires and other high-speed tires of automobiles, snap-in valves are often used to play the roles of sealing the tires and inflating the tires. The metal material currently used in snap-on valves is copper alloy. This material has been used in the automobile manufacturing industry for a long time. This material has certain shortcomings and limitations in manufacturing, which are mainly reflected in front-end manufacturing. In terms of technology, it refers to the heating extrusion forming process. [0003] In the traditional processing flow of the copper alloy nozzle body, the initial forming method is to heat the truncated copper alloy material to 680°C in the electric furnace, open the furnace door, clamp one of them with clamps an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P23/04B22D17/00B22D18/00C22C18/04
Inventor 顾顺金
Owner SHANGHAI BAOLONG AUTOMOTIVE CORP
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