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Preparation method of high-strength aluminum alloy flange bolt

A flange bolt and aluminum alloy technology is applied in the field of preparation of high-strength aluminum alloy flange bolts, which can solve the problems of accident sources, fractures or cracks, and easy rust and corrosion, and achieve improved tensile strength, good plasticity, The effect of high bolt precision

Inactive Publication Date: 2013-06-05
繁昌县琪鑫铸造有限公司
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

In addition, when the bolts are in a relatively humid environment, they are prone to rust and corrosion, eventually leading to breakage or cracks, forming a potential source of accidents

Method used

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Embodiment Construction

[0022] The present invention will be further described in conjunction with the following examples:

[0023] The preparation method of high-strength aluminum alloy flange bolts, the processing steps include:

[0024] a. Casting rod material, in parts by weight, first put 11-14 parts of waste aluminum profiles into the intermediate frequency electric furnace to melt into molten steel, then add carburant, and wait until the temperature in the intermediate frequency electric furnace rises to 650 ~ 700 ° C, then Put in 32-34 parts of A356 aluminum ingots, 30-35 parts of pig iron and 12-16 parts of returned furnace materials, and at the same time sprinkle a layer of thermal insulation covering agent on the surface of the melt to cover, then remove slag, add alloy after slag removal, wait for When the temperature in the intermediate frequency electric furnace reaches 1400°C, pouring is carried out, and the weight percentage of each chemical composition of the control rod blank should...

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Abstract

The invention discloses a preparation method of a high-strength aluminum alloy flange bolt. Machining steps comprise rod material casting and the like. The rod material casting comprises that 11-14 parts by weight of waste aluminum sectional materials are first fed into a medium frequency furnace to be melted into molten steel, carbon adding agents are then added into the molten steel, when temperature inside the medium frequency furnace rises to 650-700 DEG C, 32-42 parts by weight of A356 aluminium ingot, 30-35 parts by weight of cast iron and 12-16 parts by weight of foundry returns are then fed and at the same time, a layer of warm-keeping covering agent is sprinkled on the surface of the solution for covering, then slagging is conducted, after the slagging, alloy is added, and when temperature inside the medium frequency furnace rises to 1400 DEG C for discharging, pouring is conducted. According to the preparation method of the high-strength aluminum alloy flange bolt, cold extruding technology is adopted to machine the bolt, so that the strength of the bolt is improved, a hardness value and a strength value needed by the high-strength bolt are satisfied, and the problems of delayed fracture and fatigue fracture of the bolt under high strength are solved, and in the use process, connection is reliable, the bolt is not prone to fracture, service life of the bolt is prolonged, and use demands to the high-strength bolt in all industries in the society are satisfied.

Description

technical field [0001] The invention relates to a bolt processing method, in particular to a preparation method of high-strength aluminum alloy flange bolts. Background technique [0002] Flange bolts are commonly used fasteners in the machinery industry. The current processing method is generally turning and forming, and the strength is often difficult to guarantee. Sometimes unsafe phenomena such as U-turn and rod breakage occur during use, which is very harmful to industrial production. Therefore, it plays an important role in the development of technology and economy to study and improve the production method of high-strength bolts to ensure the quality stability of high-strength bolts. In addition, when the bolts are in a relatively humid environment, they are prone to rust and corrosion, eventually leading to breakage or cracks, forming a potential source of accidents. [0003] In view of this, it is necessary to provide a flange bolt preparation method to produce hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/16B23P15/00C23F17/00
Inventor 赵光明
Owner 繁昌县琪鑫铸造有限公司
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