How are steel construction processed and fabrication？

How are steel construction processed?

• Technical preparation: drawing review, detailed design, processing and production plan, process test.
• Material preparation: purchase, inspection and warehousing.
• Tool preparation: transportation, processing (cutting, punching, edge processing, etc.), welding, painting, testing.
• Labor organization preparation: special work permit, pre job training, technical disclosure.
• Then, it is processed and produced in the workshop according to a set of professional technological processes.

Technical requirements for steel construction fabrication

1. Production preparation before steel construction processing.

2. Technical preparation: drawing review, detailed design, processing and production plan, process test.

3. Material Preparation: purchase, inspection and receipt.

4. Equipment preparation: transportation, processing (cutting, punching, edge processing, etc.), welding, painting, testing.

5. Labor organization preparation: special work permit, pre job training, technical disclosure.

Steel structure processing and manufacturing process

1. Setting out: the process of steel structure manufacturing is to draw the entity of products or parts on the setting out table or flat plate at a scale of 1:1 according to the product construction details or the shape and size required by the parts drawings, to obtain the actual length and make the template.

2. Material (line): draw the actual sample of the component on the steel according to the template, and mark various processing marks to prepare for the blanking and blanking of the steel.

3. Cutting: cutting is to separate the part shape of lofted and numbered materials from the raw materials. Common cutting methods include gas cutting, mechanical cutting (shearing, sawing) and plasma cutting.

4. Forming: according to the design requirements, the processing equipment and certain tooling die are used to bend the plate or section steel into a certain shape. Generally, there are two methods: cold bending and hot bending.

5. Deviation correction: the steel will be deformed during storage, transportation, hoisting and processing, and the steel and components that do not meet the technical standards must be corrected. Correction methods: flame correction (also called thermal correction), mechanical correction and manual correction (also called cold correction).

6. Cutting edge processing: cutting edge processing methods include: shovel edge, planer edge, milling edge and carbon arc air gouging edge.

7. Punching: including rivet holes and bolt holes, which can be drilled and punched. The allowable deviation of hole making accuracy and hole spacing shall conform to the design specification.

8. Assembly: also called assembly, assembly and assembly, refers to the assembly of processed parts and semi-finished parts into independent finished products according to the requirements of the construction drawings. The methods of assembling steel construction include ground sampling, copy assembly, vertical assembly, horizontal assembly and tire mold assembly.

9. Welding: welding is a key step in steel construction manufacturing.

10. End milling, drilling, installation hole and friction surface treatment.

11. Rust removal, painting and numbering.

Pre assembly of steel structure

Due to the limitation of transportation and installation, or in order to ensure the smooth installation, a number of finished parts are set in the factory according to the space required by the design, assembled, and checked the connection status of each part, which is called pre assembly.