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San-RafaelHow the corner size and edge flatness of the square pipe are uniform
Before gas cutting, remove the dirt and grease on the steel surface, and leave a certain space below to facilitate the blowing out of slag. During gas cutting, the movement of the cutting torch shall be kept at a uniform speed. The cutting surface should be 2 ~ 5mm away from the tip of the flame core. If the distance is too close, the edge of the cut will melt, and if it is too far away, the cutting will be interrupted easily due to insufficient heat.
Saint-Louis.Some of these are well understood by everyone. Therefore, the quality of square tubes will directly affect the development of the construction industry. What if we can make the service life of square tubes longer? Here, we also need to ask the personnel of the square tube manufacturer for instructions, so that the square tube can bring us greater help in life.
Production standard classification square tube is divided according to production standard: national standard square tube, Japanese standard square tube British standard square tube, American standard square tube, European standard square tube and non-standard square tube.
.At the same time, hanging heating shall be carried out during heating to reduce quenching deformation. For high-precision guide rail, gas nitriding or ion nitriding shall be carried out to reduce deformation; Square tubes have outstanding performance in all aspects of performance. We will also test them in this regard when making square tubes more durable. What outstanding performance do square tubes have in mechanical properties? Next, I'll introduce it to you.
Large diameter welded square pipe for low pressure fluid transmission Standard No.: gbt14980-1994. Representative material: q235ab grade. It is mainly used to transport low-pressure fluids, such as water, sewage, gas, air and heating steam.
The function index analysis of the square tube - the strength acts with great progress. The load on the parts is called the charge and trap load. The damage power of the square tube under the charge and trap load is called the charge and trap toughness.
Functional index analysis of q355b square tube - angular plasticity refers to the power of plastic deformation (permanent deformation) without destruction of q355b square tube data under load.
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.
ranking.It is recommended that the galvanized surface be primed with epoxy zinc yellow primer.
Cutting: 1 to be fast,Saint-LouisPrice of hot dip galvanized square pipe, no teeth, or whether the cutting line is flat, the starch taste of oil affects the quality of dishes. First choose to cut potatoes with less sharp bottom, so when you cut, it's easy to leave the corner of the side end.
Of course, since the q355b square tube material is selected as the base metal, it generally has special purposes, so the welding materials will not be selected casually. It is better to use it according to the welding material manual. If the welding rod manual says that the base metal should be preheated, it should be preheated. Because the welding materials are not used according to the manufacturer's instructions, the weld performance will be greatly reduced.
Q355b square pipe for mining fluid transportation, Standard No.: gbt14291-2000. The representative material is Q235 grade B steel which is mainly used for coal mine air pressure, drainage and vertical shaft gas drainage straight seam q355b square pipe.
Design brand.Both internal and external welding of square pipes are carried out by American Lincoln Electric welding machine for single wire or double wire submerged arc welding, so as to obtain stable welding specifications.
The floating mandrel mill is in its heyday
High productivity of square tube: the efficiency of cold production of mechanical parts is very high, several times or even hundreds of times higher than cutting. For example, the use of cold pin for automobile is twice higher than that of cutting. At present, cold pin automata is used to improve productivity. The productivity of table cooling automata is equivalent to that of 100 ordinary lathes or 10 shaft self-propelled machines.
Saint-Louis.Forging has many advantages in improving the plasticity of q355b square tube and improving the quality of steel,Saint-LouisHow much is 200 galvanized square tube, because the cast state of forged metal can be broken when forging q355b square tube. Therefore, there are forging workshops in some q355b square tube factories.
Q355b square tube, the selected die material, has obvious hardening in the deep drawing process, resulting in many hard metal points, resulting in adhesion. Special products such as professional square tube, square rectangular tube, seamless square tube, galvanized square tube and galvanized tube are 20-year-old brands, with advantageous price and guaranteed quality. It makes the surface of workpiece and die easy to scratch and wear,Saint-LouisPrice of galvanized pipe, so tool steel for general die can not be used.
You can really feel that the square tube is widely used in the development, and q355b square tube factory continues to extend in the technical level, which makes the current square tube develop more widely.