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Zinc-aluminum alloy gear box cover and preparation process thereof

A technology of gear box cover and zinc-aluminum alloy is applied in the field of zinc-aluminum alloy gear box cover and its preparation technology, which can solve the problems of short service life, easy oxidation and rust, and bulky products, and achieves long service life and easy processing and forming. , the effect of excellent mechanical properties

Active Publication Date: 2014-08-13
DONGGUAN JIEAOSI HARDWARE PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing gearbox cover is made of pig iron, which is easy to oxidize and rust, has poor wear resistance and is easy to burst, and has a short service life.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A preparation process for a zinc-aluminum alloy gear case cover of the present embodiment comprises the following preparation steps:

[0051] 1) Melting: Preheat the smelting furnace first, the preheating temperature is 350°C, and the preheating time is 15 minutes, and then the raw materials with the following mass percentages: zinc 95.4597%, aluminum 3.9700%, magnesium 0.0347%, copper 0.5230% , 0.0079% iron, 0.0034% lead, 0.0009% cadmium, and 0.0004% tin are put into the melting furnace in turn, and the impurity content is controlled to be 0.0032% lead, 0.002% cadmium, and 0.0004% tin, so that each raw material is melted and refined in the melting furnace in turn 1. Heat preservation to form a melt; the melting temperature is 600°C, and the melting time is 6h; the refining temperature is 500°C, and the refining time is 20min;

[0052] 2) Die-casting molding: Die-casting machine debugging, adjust the fast injection force of the die-casting machine to 1 circle, the fast ...

Embodiment 2

[0058] A preparation process for a zinc-aluminum alloy gear case cover of the present embodiment comprises the following preparation steps:

[0059] 1) Melting: Preheat the smelting furnace first, the preheating temperature is 355°C, and the preheating time is 14.5min, and then the raw materials with the following mass percentages: zinc 95.4366%, aluminum 4.0100%, magnesium 0.0328%, copper 0.5110 %, iron 0.0074% are put into the smelting furnace in sequence, and the impurity content is controlled to be 0.0036% lead, 0.0011% cadmium, and 0.0005% tin, so that each raw material is melted, refined, and kept warm in the smelting furnace to form a melt; the melting temperature is 615°C, the melting time is 5.5h; the refining temperature is 515°C, and the refining time is 19min;

[0060] 2) Die-casting molding: Die-casting machine debugging, adjust the fast injection force of the die-casting machine to 1 circle, the fast injection stroke to 60mm, and the mold opening time to 50S→die-...

Embodiment 3

[0066] A preparation process for a zinc-aluminum alloy gear case cover of the present embodiment comprises the following preparation steps:

[0067] 1) Melting: Preheat the melting furnace first, the preheating temperature is 360°C, and the preheating time is 14 minutes, and then the following mass percentages of raw materials: zinc 95.4615%, aluminum 3.9800%, magnesium 0.0319%, copper 0.5140% , iron 0.0081% are put into the smelting furnace in turn, and the impurity content is controlled to be 0.0032% lead, 0.0010% cadmium, and 0.0003% tin, so that each raw material is melted, refined, and kept warm in the smelting furnace to form a melt; the melting temperature is 640 ℃, the melting time is 5h; the refining temperature is 530℃, and the refining time is 18min;

[0068] 2) Die-casting molding: Die-casting machine debugging, adjust the fast injection force of the die-casting machine to 1 circle, the fast injection stroke to 60mm, and the mold opening time to 50S→die-casting mol...

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Abstract

The invention relates to the technical field of a gear box cover, and in particular relates to a zinc-aluminum alloy gear box cover and a preparation process thereof. The gear box cover is made of a zinc-aluminum alloy material, wherein the zinc-aluminum alloy material consists of the following chemical components by mass percent: 94.5 to 96.5 percent of zinc, 3 to 5 percent of aluminum, 0.02 to 0.04 percent of magnesium, 0.4 to 0.6 percent of copper, 0.006 to 0.009 percent of iron, 0.002 to 0.004 percent of impurity lead, 0.0005 to 0.0015 percent of cadmium and 0.0001 to 0.0008 percent of tin. The preparation process comprises the steps such as smelting, die-casting forming, polishing, flash removing, grinding and CNC machining. The gear box cover is easier to assemble, high in wear resistance, excellent in mechanical property and long in service life; the process is simple, the quality is stable, the production efficiency is high, the overall cost can be reduced by more than 50 percent, and the industrialized mass production can be realized.

Description

technical field [0001] The invention relates to the technical field of gear case covers, in particular to a zinc-aluminum alloy gear case cover and a preparation process thereof. Background technique [0002] As one of the most basic parts for transmitting motion and power, gears are widely used in the industrial field. Gears are widely used as transmission and speed control components in mechanical equipment. Gears with different diameters and / or tooth shapes are composed of gear sets and packaged in a gear box to seal the lubricating oil to protect the gear working surface, reduce friction, reduce power loss. As a part of the outer casing of the gearbox, the gearbox cover ensures the sealing of the gearbox, conducts and dissipates the heat from the gearbox, supports the gearbox bearings and transmission shafts and ensures the transmission stability of the transmission system, and plays a role in isolation and reduction. Function of noise from inside the gearbox. However...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C18/04B23P15/00B22D17/08
Inventor 雷欣周正涛宋志敏
Owner DONGGUAN JIEAOSI HARDWARE PROD
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