CN101921937A - Aluminum alloy lock cylinder - Google Patents

Abstract

The invention relates to an aluminum alloy lock cylinder. The lock cylinder comprises the following components by weight percent: 0.8-1.1% of silicon, less than 0.3% of iron, 0.8-1.2% of magnesium, 0.36-0.45% of copper, 0.2-0.29% of manganese, less than 0.04% of chromium, less than 0.1% of zinc, less than 0.1% of titanium and the balance aluminum. The components of the aluminum alloy lock cylinder of the invention have not been registered in the commonly used alloy designations; the lock cylinder has moderate strength and hardness and good ductility and can satisfy the punching requirement; and the profile and key-slot of the lock cylinder can be completely shaped once through aluminum extrusion, thus greatly reducing the manufacturing cost of the lock cylinder.

Description

Aluminum alloy lock core

Technical field

The present invention relates to the lock core field, be meant a kind of aluminum alloy lock core especially.

Background technology

Because copper has advantages such as material is hard, intensity is high, easy machining, the lock core material overwhelming majority in the market is a copper.But along with copper valency is in recent years constantly climbed to a higher point, the cost of copper lock core also significantly rises.By contrast, the price of aluminium is 1/4～1/3 of a copper valency, and the proportion of aluminium also has only 1/3 of copper, and therefore making lock core with aluminium alloy can reduce cost greatly.But existing aluminum alloy materials all can not satisfy the production requirement of lock core, its material hardness be not too low be exactly too high, hardness is too low in when punching burr to take place easily, causes the lock core key notch insert because of the jagged key that can't allow; Hardness is too high then can't pass through extrusion forming, even perhaps moulding also can't directly be extruded the key notch.

Summary of the invention

Technical problem to be solved by this invention is: provide a kind of intensity, hardness all to be fit to the aluminum alloy lock core of lock core production requirement.

For addressing the above problem, the technical solution used in the present invention is: aluminum alloy lock core, and the composition by weight of its composition is as follows: silicon 0.8-1.1%; Iron＜0.3%; Magnesium 0.8～1.2%; Copper 0.36-0.45%; Manganese 0.2-0.29%; Chromium＜0.04%; Zinc＜0.1%; Titanium＜0.1%; Surplus is an aluminium.

The invention has the beneficial effects as follows: the component of described aluminum alloy lock core does not have official registration as yet at present general alloy designations, and its intensity, hardness is moderate, the extension performance is good, not only can satisfy the punching requirement, and fully can be by extruding the moulding that once realizes external form and key notch, the manufacturing cost of having saved lock core greatly.

Embodiment

Below by specific embodiment aluminum alloy lock core of the present invention is described in further detail.Provide 6 embodiment with tabulated form below, the composition of lock core and parts by weight thereof see the following form among each embodiment:

The proportioning content of the used composition of aluminum alloy lock core (meter by weight)

The preparation method of each embodiment lock core is identical: after the rods and bars of aluminium alloy that material therefor is made is heated through mould push, ingress, operation such as alignment, and then the scale sawing, frame up, just obtain required aluminum alloy lock core.The aluminum alloy lock core of gained has moderate intensity, hardness and the performance that extends preferably, can satisfy further processing and use needs.

Claims (1)

1. aluminum alloy lock core, it is characterized in that: the composition by weight of its composition is as follows:

Silicon 0.8-1.1%;

Iron＜0.3%;

Magnesium 0.8～1.2%;

Copper 0.36-0.45%;

Manganese 0.2-0.29%;

Chromium＜0.04%;

Zinc＜0.1%;

Titanium＜0.1%;

Surplus is an aluminium.