Steps of moving staircase and die casting technique thereof

A technology of escalator and die-casting process, applied in escalators, transportation and packaging, etc., can solve the problems of increased manufacturing cost, high operating cost, heavy elevator weight, etc., and achieve long service life, low price, and reduced production cost. Effect

Inactive Publication Date: 2007-02-07
三六零安全科技股份有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The steps of the escalator are heavy and expensive to manufacture due to rising aluminum prices
[0004] There are also escalator steps made of stainless steel. Since the main components of stainless steel are steel, chromium, and nickel, the weight of this elevator is very large, and it requires high operating costs during operation.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] A magnesium-aluminum alloy formula used in a magnesium-aluminum alloy step is:

[0022] Al: 8.5-9.3%

[0023] Mn: 0.25~0.50%

[0024] Zn: 0.50~1.0%

[0025] RE (mixed rare earth elements): 0.5 to 1.5%

[0026] Impurity elements: Cu: ≤0.005%

[0027] Fe: ≤0.005%

[0028] Ni: ≤0.002%

[0029] Si: ≤0.10%

[0030] The total amount of other impurities ≤0.02%

[0031] The balance is Mg;

[0032] Wherein all percentages are percentages by weight.

[0033] The step die-casting process of this escalator includes the following steps:

[0034] First, the magnesium alloy ingot is preheated to about 150°C on the magnesium alloy ingot preheater, and then put into the magnesium alloy melting and holding furnace for melting and heat preservation, and protected with a mixed gas of SF6 and nitrogen.

[0035] Then carry out die-casting on the die-casting machine to form the steps of the req...

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Abstract

The invention relates to a lift step of automatic lifter, wherein said step is made from aluminum-magnesium alloy; said aluminum-magnesium alloy contains aluminum at 8.5-9.3%, manganese at 0.25-0.50%, zinc at 0.50-1.0%, mixed rare-earth element at 0.5-1.5%, and the left magnesium; the casting method of said step comprises: heating the aluminum-magnesium alloy on the preheater; then adding it into the fusion thermal-insulated furnace to be smelted and kept warm; then compression casting it on the casting machine to form the step in needed shape, while the kept temperature in casting is 670-690Deg. C and the injection speed of casting machine 6.5-8m / s, and injection pressure is 250-300pa, wherein the step specific weight of aluminum-magnesium alloy is lower, to reduce the operation efficiency of lifter, prolong the service life, and reduce the cost.

Description

technical field [0001] The invention relates to a part of an escalator, in particular to a step of an escalator made of magnesium-aluminum alloy material and a die-casting process thereof. Background technique [0002] The steps of existing escalators are mostly made of aluminum-silicon alloy materials. [0003] For example, a step of an escalator made of YLD102 aluminum-silicon alloy material, said YLD102 aluminum-silicon alloy material is composed of the following components by weight: Si 10.5-13%, Fe 0.6-0.8%, Cu≤0.5 %, Mg≤0.5%, Mn≤0.25%, Zn≤0.10%, Ti≤0.15%, Ni≤0.05, Pb≤0.05%, the sum of other impurity elements≤0.15%, and the rest is Al. The steps of such escalators are heavy and, due to the rising price of aluminum, the manufacturing costs of such steps are also increasing. [0004] There are also escalator steps made of stainless steel. Since the main components of stainless steel are steel, chromium, and nickel, the weight of this elevator...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B23/12C22C23/02B22D17/00
Inventor 陆菊明周静肖作州
Owner 三六零安全科技股份有限公司
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