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According to the aluminum alloy pipeline industry needs to test the corresponding technical indicators

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According to the aluminum alloy pipeline industry needs to test the corresponding technical indicators

Date of release:2018-08-10 Author: Click:

Control of preheating temperature of aluminum alloy pipeline and inter-layer temperature. Preheating shall be conducted before welding with plates with thickness of more than 8mm. The preheating temperature shall be controlled between 80°C~ 120°C, and the inter-layer temperature shall be controlled between 60°C~ 100°C. High preheating temperature, in addition to the operation environment is bad, may also affect the alloy properties of aluminum alloy, joint softening, weld appearance forming bad phenomenon. High interlayer temperature will increase the probability of thermal cracks in aluminum welding.


The physical and chemical properties of aluminum alloy and steel are far from each other. The thermal conductivity of aluminum alloy itself is large (about 4 times that of steel), heat dissipation is fast. Therefore, at the same welding speed,


The heat input of welding aluminum alloy is 2~4 times larger than that of welding steel. If the heat input is not enough, it is easy to have the problem of insufficient fusion depth or even incomplete fusion, especially in the position of the beginning of the weld.


Dalian aluminum alloy pipeline application field is very wide. Pipes are used in many industries. Different industries have different characteristics of different industries, so they have different technical requirements. Pipe is a more mature product, industry has the corresponding technical standards. According to the industry of pipe application, select the corresponding product standard and test the corresponding technical index according to the aluminum alloy pipe industry.


Generally there are, size index, inside diameter, outside diameter, wall thickness. Strength index, the strength index of the pipe has radial compressive strength, i.e. ring stiffness, flexibility index, bending index, impact strength, etc. For drinking water, the pipe has its sanitary technical index and water pressure resistance index.


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Key word:Dalianaluminiumalloypipeline,Aluminiumalloypipingmanufacturer,Aluminiumalloypipeline

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