PetersburgHot dip galvanized pipe factoryGrasp the market

It seems that preheating the q355b square tube can avoid a lot of problems and there will be a better guarantee that the q355b square tube itself is a quality problem.

In the heat exchange planning of metallurgy, petrochemical and other occupations,Petersburg12mm galvanized square pipe, there are various forms of heat exchangers, such as poor heat exchange, difficult cleaning, large dust thermal resistance and so on,Petersburg114 galvanized square pipe, which can not meet the needs of production customers. The square tube heat exchanger based on square tube throat has the advantages of excellent heat exchange, easy cleaning, small dust thermal resistance and compact structure.

Petersburg.Ship carbon steel square pipe (gb5213-8) is a carbon steel square pipe for ship class I pressure pipe system, boiler and superheater. It is a long-term business square pipe, square pipe, seamless square pipe, galvanized square pipe and galvanized pipe. Welcome to consult. The working temperature of carbon steel square pipe wall shall not exceed 450 ℃, and the working temperature of alloy steel square pipe wall shall exceed 450 ℃.

In order to ensure the stability of the perforation performance and chemical properties of the billet of the square tube, the technical regulations shall be strictly implemented in the operation of the circular furnace, the operation of the heating furnace shall be frequently, the abnormal conditions shall be handled in time and recorded, and the follow-up posts and quality management department shall be notified in time for handling.

.The square tube will be tested in many aspects of its performance in the process. Each test is for the square tube to have a good performance in practical application. So what are the different properties of square tubes? Next, I'll introduce the characteristics of the lower tubes in terms of mechanical properties.

Drawing process flow of square tube in the production process of square tube,PetersburgHow much is galvanized square tube 110, so that the production quality of square tube can be more strictly guaranteed. This paper mainly introduces the drawing process flow of square tube. Let's understand it below.

Yield point of square tube (& sigma; s): the stress of metal material with yield phenomenon when the sample can continue to elongate without increasing (maintaining constant) the force during the tensile process, which is called the yield point. If the stress decreases, the upper and lower yield points shall be distinguished. The unit of yield point is nmm2 (MPA).

The formed square tubes shall be tested to ensure that each piece is qualified. The qualified square tubes will be stored. Various problems will occur in the long-term storage. If there are problems, we need to deal with them in time. What are the reasons for the rusting and corrosion of square tubes? Let's introduce them to you next.

Cold drawn or cold rolled precision square tube (gb3639-200) is a cold drawn or cold rolled precision square tube with high dimensional accuracy and good surface finish for mechanical structure and hydraulic equipment. The selection of precision square mechanical structure or hydraulic equipment can greatly save machining hours, improve material rate and improve product quality.

Now in many construction projects, we can see the shadow of q355b square tube, because q355b square tube is quite hard in hardness, and the performance and quality of deformation, stamping, cutting and other processing are based on hardness which is also the guarantee of mechanical properties. Based on the above, it is very important to test the hardness of q355b square tube.

management.Be sure to select special for square pipe cutting.

All seamless q355b square tubes shall be tested for mechanical properties. Mechanical property tests are mainly divided into two categories: tensile test and hardness test.

The researcher's test before using the strip thinning drawing also confirmed that using the strip thinning drawing can greatly reduce the large value of tangential residual stress of the drawn parts and effectively prevent the occurrence of longitudinal cracking. According to different deformation degree and original sheet thickness, the appropriate thinning coefficient & psi is selected; N (generally 0.9t ~ 0.95t), if & psi; If n is too small, the deformation stress will increase sharply, resulting in the fracture of the bottom of the drawing part.

To change the required line shape of q355b square tube, it is necessary to forge the impact force of q355b square tube hammer or the pressure of hydraulic press, and can also enhance the malleability of q355b square tube, that is, the performance of changing the shape without cracks.

Credit guarantee.The cutting surface of the square tube shall be true circle, and the cutting line shall be at right angles to the axis of the square tube. Excessive force is the reason for cutting the square tube into flat or oval, so the square tube should be cut with appropriate force.

Plasticity Q235B square plasticity refers to the ability of metal materials to produce plastic deformation (deformation) without deformation under load.

To sum up, improving the quality level of square tube is the key to ensure the service life of die. Therefore, when the economic cost and equipment conditions permit, the quality level of square tube, including surface quality and internal quality, should be improved as much as possible by using more mature process measures.

Petersburg.The advantages of real bending are small reverse, accurate forming, and as long as the roll shape is accurate, the R of inner corner forming is more accurate. The disadvantage of solid bending is that it has tensile thinning effect. The actual bending will produce tension at the bending point, and the tensile effect will shorten the longitudinal length of the bending line; The metal at the real bend will become thinner due to stretching.

General shot blasting is used for square tube with regular shape. Several polishing heads are up, down, left and right, with high efficiency and little pollution.

Performance index analysis of square tube - hardness is an indicator to measure the hardness and softness of metal materials. At present the hardness method is commonly used to measure the hardness in production. It uses the indenter with fixed geometry to measure the hardness value of the metal material surface tested under fixed load according to the degree of hardness.