日本欧美一区二区三区不卡视频_亚洲欧美日韩中文字幕一区二区_日韩免费视频一区二区_欧美黑人粗大猛烈18p

Foshan main steel members (a)

1 Preparations
(1), the former Foshan steel processing, construction workers prepared by the process of order by the chief engineer for approval. Carefully check process preparation of each process, and to do the work of peer review process and made drawings.
(2) for processing a variety of materials and equipment needed to carry out checks, process equipment shall comply with the technical rules.
(3), construction workers well in advance of the work of the technical disclosure of the procedures.
(4), the operator of the induction training and assessment well in advance of the special types of qualification confirmation must be certified.
(5), should be checked before lofting master processing map and process requirements, identify problems in time to the departments concerned.

2 steel members Stake
(1), the steel member in stakeout procedures to verify the number of Foshan and steel fittings, material specifications, model, size, etc., and then the ingredients, crossed loft, stacked separately.
(2), an important node in the size of the figure processing structure or component can be placed or actual sample calculation check.
You must check the steel specifications, materials, lot before (3), item number, and remove the steel surface oil, dirt and other dirt.

3 cleavage
(1), beam flange plate, web and end plate after lofting use CG1-100 semi-automatic cutting machine, to avoid the steel plate member is not straight edge, lack of edge broken corner phenomenon; ribs and webs with rigid support Shears shearing machine; profile cutting by hand or machine cutting wheel.
(2), should be before cutting steel surface rust, oil, etc. clean.
(4), sheet metal gas cutting should be carried out on a dedicated platform.

4 hole system
(1), joints and connections of steel members are connected by high strength bolts. Aperture position, size, requires a high degree of precision. Using drilling drilling.
(2), using the drilling jig and pack sets of drilling, hole making application fixtured to prevent the jig or laminates bit string.
(3) After completion of the application system hole hole burr grinder completely clear, and must not damage the base material.

5 assembly
(1), prior to assembly of the lower parts should be corrected, or the press can be used for thick steel plate flame heating correction.
(2), members using flange straightening machine for the production of beams correction.
(3), the assembly members should determine a reasonable order of assembly according to its structure, welding method and welding sequence and the like. To reduce welding deformation.
(4), this project steel columns, steel beams are on the internet a 1: 1 ratio put real kind, according to the processing of all the parts on the assembly diagram.