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Manufacturing method of aluminium alloy screw

A technology for aluminum alloy and screws, which is applied in the preparation of aluminum alloy screws and the field of screws, can solve the problems of high consumption, high cost, and acid resistance of steel screws, and achieve the effect of simple preparation method

Inactive Publication Date: 2007-03-07
陈继忠
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Steel screws are not resistant to acid, poor in plasticity, high in consumption and high in cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Step 1. Preparation of aluminum alloy rods Al 90.7, Mg 2.0, Zn 6.1 and Cu 1.2 are placed in a melting furnace for melting according to parts by weight. The temperature of the aluminum alloy melt in the melting furnace is controlled at 700°C, and a covering agent is added to the surface of the melting furnace, and then drawn into aluminum alloy rod;

[0012] Step 2. Preparation of aluminum alloy screw semi-finished products. Place the aluminum alloy rod prepared in step 1 in a heating furnace to heat and keep it warm to make the components of the aluminum alloy rod uniform. The heating temperature is controlled at 450°C and the holding time is 12 hours. Extruded on an extruder, extrusion temperature: 320°C;

[0013] Step 3: Aging Quenching The semi-finished aluminum alloy screw prepared in Step 2 was placed in an aging quenching furnace for aging quenching at a quenching temperature of 138° C. and a holding time of 16 hours to obtain a finished aluminum alloy screw.

Embodiment 2

[0015] Step 1. Prepare aluminum alloy rods. Put Al 88.9, Mg 3.0, Zn 5.1 and Cu 2.0 in a melting furnace for melting in parts by weight. The temperature of the molten aluminum alloy in the melting furnace is controlled at 710°C. Add a covering agent to the surface of the melting furnace, and then drawn into aluminum alloy rod;

[0016] Step 2. Preparation of aluminum alloy screw semi-finished products. Place the aluminum alloy rod prepared in step 1 in a heating furnace to heat and keep it warm to make the components of the aluminum alloy rod uniform. The heating temperature is controlled at 475°C and the holding time is 8 hours. Extruded on an extruder, extrusion temperature: 450°C;

[0017] Step 3: Aging Quenching The aluminum alloy screw semi-finished product prepared in Step 2 is placed in an aging quenching furnace for aging quenching at a quenching temperature of 143° C. and a holding time of 14 hours to obtain a finished aluminum alloy screw.

Embodiment 3

[0019] Step 1. Prepare aluminum alloy rods. Put Al 91.7, Mg 2.5, Zn 5.5, and Cu 1.5 in a melting furnace for melting in parts by weight. The temperature of the molten aluminum alloy in the melting furnace is controlled at 720°C. Add a covering agent to the surface of the melting furnace, and then drawn into aluminum alloy rod;

[0020] Step 2. Preparation of aluminum alloy screw semi-finished products. Place the aluminum alloy rod prepared in step 1 in a heating furnace for heating and heat preservation to make the components of the aluminum alloy rod uniform. The heating temperature is controlled at 460°C and the holding time is 10 hours. Place it on an extruder for extrusion molding, extrusion temperature: 400°C.

[0021] Step 3: Aging Quenching The aluminum alloy screw semi-finished product prepared in Step 2 is placed in an aging quenching furnace for aging quenching at a quenching temperature of 133° C. and a holding time of 18 hours to obtain a finished aluminum alloy sc...

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PUM

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Abstract

This invention relates to an Al alloy screw and its preparation method. The weight proportion of the raw materials is: Al 88.9-91.7, Mg 2.0-3.0, Zn 5.1-6.1, Cu 1.2-2.0. The preparation method includes: smelting raw materials in a smelting-furnace in ratio, controlling the temperature of the Al alloy melt liquor in 700-720deg.C then to draw it to a rod, 2, putting it in a heating furnace for heating at 450~475deg.C for 8-12h to uniform the composition, then to be put on a squeezing press to be squeezed to formation under 320-450deg.C 3, putting the semi-product got in step 2 in an ageing quenching furnace to be quenched under 138 minus or plus 5deg.C, heat insulation time 16 minus or plus 2h to get Al alloy screws.

Description

Technical field: [0001] The invention relates to a screw. In particular, it relates to a preparation method of an aluminum alloy screw made of an aluminum alloy material. The aluminum alloy surface treatment is mainly used as a fastener in the building door and window industry, and belongs to the technical field of metal connectors. Background technique: [0002] Screws are important connectors in the building door and window industry. Before the present invention was made, the traditional screws used in the door and window industry were all steel screws. Steel screws are not acid-resistant, have poor plasticity, consume a lot of energy, and are expensive. Invention content: [0003] The object of the present invention is to overcome the above disadvantages and provide a method for preparing aluminum alloy screws with acid resistance, good plasticity and low cost. [0004] The object of the present invention is achieved in this way: a method for preparing an aluminum al...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/10C22C1/02C22F1/04
Inventor 陈继忠
Owner 陈继忠
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