Comparison of reagents for straight seam steel pipes

Straight seam steel pipe products are widely used in water supply engineering, petrochemical industry, chemical industry, electric power industry, agricultural irrigation, and urban construction. They are 20 key products developed in my country. Straight seam steel pipes are used for liquid transportation: water supply and drainage. Straight seam steel pipes are used for gas transportation: coal gas, steam, liquefied petroleum gas. Straight-seam steel pipes are used for structure: piling pipes and bridges; pipes for docks, roads, and building structures. The comparison of the die-casting skills and reagents of the straight seam steel pipe is something that users need to understand. The following is a specific introduction:

1. Straight seam steel pipe casting steel: a pressure processing method that uses the reciprocating impact of a forging hammer or the pressure of a press to change the blank into the shape and size we need.

2. Kneading: It is a processing method in which the steel puts the metal in a closed kneading jig and applies pressure at one end to extrude the metal from the regular die holes to obtain products with the same shape and size. It is mostly used to produce non-ferrous metals Material steel.

3. Straight seam steel pipe rolling: The steel metal billet passes through the gaps (various shapes) of a pair of rotating rollers, the material section is reduced due to the shrinkage of the rollers, and the length is increased.

4. Drawing steel: The processing method of drawing the already rolled metal blanks (forms, tubes, products, etc.) through the die hole to reduce the length and add the section is mostly used for cold working.

The die-casting technology of straight seam steel pipe metal is no longer a secret. As early as the 1930s, it has been discovered in the West that steel and other softer non-ferrous metals can be deformed by rolling. This new technology was quickly implemented as soon as it was launched. Because its skills are simple and easy to learn, production equipment and basic costs are very low, and the variety of straight seam steel pipes produced is rich and diverse, reliable, and extremely useful. Therefore, the upgrade of technology has been subject to scientific research. The attention of the staff. About ten years later, a British company successfully developed a glass smoothing agent, which enabled the rolling technology of straight seam steel pipes to spread rapidly across countries.

Before this, the traditional steel pipe rolling production technology used graphite as a smoothing agent. However, graphite smoothing agent has its shortcomings:

1. High heat transfer power, poor heat insulation, fast mold heating, fast wear, and difficult to roll long products.

2. The carbon content of the product is relatively high. When the stainless steel is produced, intergranular corrosion will simply occur. Therefore, the carburized layer must be removed after completion to increase the cost.

3. Increased ecological pollution damage.

Compared with graphite smoothing agent for straight seam steel pipe, its advantages are:

1. The glass heat transfer power is low, the heat preservation of the surface of the workpiece is done well, and the service life of the mold is guaranteed.

2. The smoothness is three times higher than that of graphite, and the production rate and width are correspondingly increased, and then the scale of goods produced by the coiling machine can be expanded.

3. The glass smoothing agent is chemically stable and will not cause any disadvantages in the arrangement.

4. The concentration of the glass can be adjusted at will to obtain different physical functions (such as softening point, viscosity, etc.)to be used to rolling products with different raw materials.

5. Clean and environmentally friendly, with little damage to the environment.