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Galvanized steel strands for high-strength bridge mining

Galvanized steel strands for high-strength bridge mining

Steel strands can be divided into four levels according to the nominal compressive strength: 1 270 MPa.1 370 MPa, 1 470 MPa and 1 570 MPa. According to the inner steel wire zinc layer can be divided into three levels: special A, A, B Steel strand raw material selection: carefully selected raw materials, carefully built, use with peace of mind. Processing customization: sample processing customization can be carried out according to customer requirements. Sufficient inventory: manufacturer production, quality assurance, sufficient inventory, rest assured to buy. The steel strand has strict requirements for the surface of the steel wire, and the surface of the steel wire cannot have damage such as stacking, breaking, scratching, bending and flattening. The surface of the steel strand can also not have oil stains and other impurities, and the galvanized layer on the surface should be uniform and continuous, without cracks and peeling.

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Stranded wire for cable production process

Stranded wire for cable production process

1. Good flexibility: it can reduce the damage caused by bending, vibration and swinging, which is conducive to installation. 2. Good reliability: the defects of the single wire that make up the stranded wire cannot be concentrated in the same place, so the impact of the single wire defect on the performance of the stranded wire is much weaker than that on the performance of the single conductor. 3. High strength: When using the same rod wire, the drawn thin wire is deformed more than the thick line, so the strength of the fine line is high. The strength of the stranded wire is higher than that of a single conductor of the same section.

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The cause and treatment of broken wire of steel strand

The cause and treatment of broken wire of steel strand

The general causes of broken wire of steel strands are: uneven steel strand material or serious corrosion; The steel strand contacts the welding spark or the welding machine wire, and the mechanical properties change; Serious crossover of steel strands near the anchor hole; The anchor deviates from the anchor pad stop point, the middle of the steel strand, or the end of the horn tube has a large bending angle with the bellows, resulting in the stress concentration of individual steel wires; The hardness of the sandwich does not match the steel strand; The tensioner is not checked as required, or the oil pressure gauge is faulty, resulting in excessive tension.

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Do you use these tools for machinery?

Do you use these tools for machinery?

The steel ruler is the simplest length measuring tool, and its length is available in four sizes: 150, 300, 500 and 1000mm. The picture below is the commonly used 150mm steel ruler.

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What is mechanical manufacturing The nature of machinery manufacturing

What is mechanical manufacturing The nature of machinery manufacturing

The machinery manufacturing industry consists of seven detailed industry segments, of which three manufacturing machinery are used in specific industries, called special machinery: agriculture, construction and mining machinery manufacturing, industrial machinery manufacturing, and commercial and service machinery manufacturing.

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Characteristics of the machinery industry

Characteristics of the machinery industry

At this stage, many machinery and equipment industries only understand the promotion methods of auction ranking, and have little understanding of other promotion methods. The cost of bidding promotion is very high, coupled with the rapid increase in labor costs, the promotion cost of enterprises continues to soar.

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The development prospect and development trend of the machinery and equipment industry

The development prospect and development trend of the machinery and equipment industry

The machinery industry is a typical discrete manufacturing industry, which is characterized by multi-variety, small batch production; There are many types of products, complex products, many uncertainties affecting the production process, frequent emergency orders, equipment failures, etc., which make the production plan change; The manufacturing process is complex, there are many uncertainties in the production process, and the coordination of the entire production process cannot be guaranteed by experience scheduling, and the process control is difficult and the management is difficult.

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