Specific inspection items and methods for steel structure spherical space frame

The specific inspection items of the steel structure spherical space frame mainly include the following five aspects. SAFS steel structure will introduce the specific details to you:

1. The first is the inspection of raw materials. Check the factory certificate, test report, etc. of the material, and you can also sample for re-inspection.

2. Ultrasonic flaw detection is mostly carried out by sampling method when testing welds. If unqualified, sampling test is required.

3. The tensile and compressive bearing capacity testing is similar to the welding seam testing. Three pieces are randomly selected from each batch for tensile and pressure testing.

4. The surface of the welded ball needs to be checked with an arc-shaped die and a steel ruler. Spot check 5% of nodes according to various specifications, and require no less than 5 pieces of each type.

5. The detection of the thinning of the wall thickness of the finished ball is similar to the detection of the surface of the welded ball, but the method used is an ultrasonic thickness gauge, and the extraction method is the same.

The above are the specific inspection items of SAFS steel structure spherical space frame. If you want to know more details, please submit a message below.

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Steel structure sun sheds are widely used

In our daily life, the application of steel structure sunshade is more and more extensive. Why do so many builders like to use steel structure to build buildings? SAFS steel structure shares the following 6 points with you:

1. The strength of this building is very high, because most of the main body of the steel structure sun shed uses steel as the raw material for production and installation, so when it is used, the age will be increased accordingly.

2. We all know that steel is more prone to rust, and in order to reduce this situation, the steel structure sun shed has been treated with anti-rust treatment on the frame.

3. In order to make the shed feel brighter, the strength of the shed roof is strengthened, and the feet are firmly welded.

4. It has good impact resistance. Because of the stability of the structure, the steel structure sun shed can be well adapted to bad weather.

5. The appearance is simple and elegant, because the steel has good toughness, so it can well meet the needs of users when designing. The finished product designed is also in line with the aesthetics of the public.

6. Simple installation. Because most of this raw material is produced by factories, it can be installed quickly after mastering the corresponding technology during construction.

Xuzhou SAFS Steel Structure Engineering Co., Ltd.

Two elements of quality control of steel space frame structure processing

                1. Steel structure blanking control

Before cutting, the cleanliness, flatness, cutting size, section roughness, verticality, notch depth and groove angle of the steel surface meet the requirements; the surface of assembly and welding needs to be treated.

Setting out: The assembly of various components and parts, and the assembly of pre-assembled components require professional setting out workers to accurately stakeout on the machined surface and assembly large template. After setting out, it must be checked by an inspector to ensure that the geometry and angle of the component machining are accurate.

The drilling template, the connecting plate after drilling, and the gusset plate correspond to the body reference line; strictly control the eccentricity of the hole, the offset of the hole distance, the hole distance, the roundness and perpendicularity, and the surface quality of the hole wall and hole edge. In order to ensure the accuracy and quality of drilling, when using die drilling, a setting out worker must set out a line to mark the reference axis and the center of the hole.

2. Steel structure assembly control

Strength, rigidity, levelness and related fixtures of work platforms and tire frames; dimensions of details and special tires; parts material, number, size, machining accuracy, quantity, surface treatment of connections and welds; datum planes , datum line, cross center line and assembly position line of parts; assembly position, direction, angle, concentricity, verticality, camber, groove angle, blunt edge, gap, gasket seal and joint dislocation of parts; Assembly sequence and method, additional welding shrinkage and machining allowance; size, length, spacing, location and surface quality of tack welding.

Component assembly: Component assembly refers to spot welding positioning and fixing before submerged arc welding. Before assembly, the small material should be corrected, and the setting out personnel should draw the center line and positioning line. After passing the inspection, spot welding is fixed, and after inspection, it is delivered for formal welding.

Article source: https://songmoon0115.medium.com/two-elements-of-quality-control-of-steel-space-frame-structure-processing-26f89f8dd97a