24
2018
-
02
4 treatment methods for processing edges of steel structures
Author：
In the production of steel structures, in order to ensure the quality of welds, technical penetration and assembly accuracy, not only the edge of the steel plate needs to be planed or shoveled into bevels, but also the edges need to be straightened or milled. So what are the processing methods for the edge of steel structure processing?
1. Shovel edge: Shovel edge can be used for edge processing that does not require high processing quality and does not require much work. There are two types of shovel edge, manual and mechanical shovel edge. Manual shovel tools include hand hammer and hand shovel, and mechanical shovel tools include pneumatic shovel hammer and shovel head.
2. Edge planing: In the production of steel structure, the edge planing of steel components is mainly carried out on edge planing machines. There are two types of edge planing for steel components: straight edge and bevel edge. The allowance for edge planing of steel components depends on the thickness of the steel. The cutting method of the steel plate varies. The general planing allowance is 2-4mm.
3. Edge milling: For the ends of some components, the method of edge milling (end face processing) can be used instead of planing. Edge milling is to maintain the accuracy of the components. Milling. It is generally carried out on a face milling machine or an edge milling machine.
4. Carbon arc gouging: Carbon arc gouging uses carbon rods as electrodes. An arc is generated between the metal being planed, and the arc has a high temperature of about 6000 ° C, which is enough to heat the metal to a molten state, and then blow the molten metal away with the airflow of the compressed air. To achieve the purpose of planing or cutting metal.
When carbon arc gouging is used to process grooves or weld roots, the oxide layer, hardened layer, top carbon or copper traces in the gouging groove must be thoroughly polished. Carbon arc gouging will generate some smoke during the planing process, which is harmful to human body, so the steel structure processing construction site must have good ventilation conditions.
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