Qingdao City,China
What material is cold-rolled steel
2023-08-23
The material of cold rolled steel is steel, and cold rolled steel is the steel produced through cold rolling. Cold rolled steel sheets have more precise thickness, smooth and beautiful surfaces, and also possess various superior mechanical properties, especially in terms of processing performance. Therefore, cold rolled steel sheets are widely used.
Steel structure characteristics
2023-08-23
1. High material strength and light weight Steel has high strength and elastic modulus. Compared with concrete and wood, the ratio of density to yield strength is relatively low. Therefore, under the same stress conditions, the component section of steel structures is small, the self weight is light, and it is easy to transport and install. It is suitable for structures with large spans, high heights, and load-bearing capacity. 2. Steel has toughness, good plasticity, uniform material, and high structural reliability Suitable for withstanding impact and dynamic loads, with good seismic performance. The internal organizational structure of the steel is uniform, almost isotropic and homogeneous. The actual working performance of the steel structure is in line with the theory of computation. So the steel structure has high reliability.
2023-04-06
1) Good quality control 2) Highly competitive prices 3) state-of-art technology products 4) Smooth communication 5) Effective OEM&ODM service
30 CrMnti alloy round steel main use explanation
2023-03-27
More than 20 CrMnti intensity, high hardenability, but slightly lower impact toughness. Mainly used for carburizing steel, can be temperature and direct quenching after carburizing and high bending strength, wear-resisting performance is good. Can be used after quenching temperature tempering or conditioning, cutting machining medium. Used in the manufacture of tractor industry in the cross section of the larger heavy-duty carburizing and force of the larger gear, gear shaft, worm, etc.
Introduction to the characteristics of steel with good performance
2023-03-27
It is mainly used for large-area wear conditions. It has good performance in terms of toughness and plasticity. The use of surfacing technology can increase the thickness and hardness of the product, because it uniformly welds the high-hardness self-protected alloy wire during welding. on the substrate. The number of composite layers is from one layer to two layers or even multiple layers. During the composite process, due to the different shrinkage ratio of the alloy, uniform transverse cracks appear. It has its presence in metallurgy, coal, cement, electricity, glass, mining, building materials, brick and other industries.
The difference between C-beam and channel steel
2023-08-23
The difference between c-beam and channel steel 1. Different concepts C-shaped steel is processed by cold bending of hot rolled plate. It has thin wall and light weight, excellent section performance and high strength. Compared with traditional channel steel, the same strength can save about 30% of materials. The channel steel is produced by hot rolling, directly supplied by the steel plant, and has a large thickness and a groove-shaped long strip.
2023-08-23
The inspection of steel bars firstly checks the label number and quality certificate of the steel bars; secondly, it needs to do visual inspection, take 5% of each batch of steel bars, check that there are no cracks, wounds and laminations on the surface, and the protrusions on the surface of the steel bars must not exceed the horizontal The height of the rib, the depth and height of the defect shall not be greater than the allowable and deviation of the location, and the bending degree of each meter of the steel bar shall not be greater than 4mm; for the next mechanical performance test, if each batch is less than 60 tons, 2 pieces shall be taken from it, each Cut two sections and do tensile and cold bending tests respectively. When cutting the test piece, 100-500mm at both ends of the steel bar should be removed, and the corresponding steel bar should be taken when the test piece is larger than 60 tons. If a test result does not meet the requirements, take another double number of samples from the same batch for each test. If there is still one unqualified sample, the batch of steel bars is unqualified, and the hot-rolled steel bars have brittle fracture, poor welding performance or significantly abnormal mechanical properties during processing, and chemical composition analysis and other special inspections should be carried out.
When the angle steel is deformed, how to correct it
2023-08-23
When the angle steel is deformed, twisted and bent, how should we correct it? 1: The small angle steel can be corrected by wrench torsion; the larger angle steel can be placed on the edge of the platform and hit the flange edge of the angle steel in the reverse twisting direction with a hammer;
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