Recently Shipment to Mid Asia Projects

How to remove rusted bearings, bolts and screws? These five tips will get you ……

This paper summarizes the causes of bearing rust and five methods to remove the rusty bearing. It not only cures the symptoms, but also cures the root cause. Finally, it also shares 3 tips to help the bearing to bid farewell to the trouble of rust. Let’s see if these little knowledge can be used in your daily work. When the bearing is seriously rusted, it is difficult to use a wrench to screw it down. Therefore, the workers will use various methods, such as knocking, dripping, burning, punching, welding, bubbling, etc. Many masters use a hammer to do it, […]

Recently Shipment to Mid Asia Projects

What is thread

What is thread? In machining, the thread is cut on a cylindrical shaft (or inner hole surface) with a cutter or grinding wheel. When the workpiece rotates, the cutter moves a certain distance along the axial direction of the workpiece, and the trace cut by the cutter on the workpiece is the thread. The thread formed on the outer circular surface is called external thread. The thread formed on the inner hole surface is called internal thread. The basis of the thread is the circular shaft surface Generally, if the cross section of the thread is triangle, it is called […]

Recently Shipment to Mid Asia Projects

I-Beam Vs H-Beam

Sometimes people will ask what is the difference between I-beam and H-beam, and how to distinguish them. Others will think that I-beam and H-beam are the same thing. In fact, this understanding is wrong. Let’s guess which is I-beam and which is H-beam in the following two pictures? Figure.1 I-beam Figure.2 H-beam For familiar friends, you can see at a glance that the first picture is I-beam, and the second picture is H-beam. Then what is the basis? The following is a specific introduction. Figure.3 I-Beam Vs H-Beam What is an I-Beam? An i-beam, also known as universal beam, is a long steel […]

Recently Shipment to Mid Asia Projects

Anticorrosion protection of oil and gas pipelines

In the actual transportation process of oil and natural gas, due to the particularity of the transportation medium, the steel pipelines to be transported will be corroded, which is mainly because oil and natural gas themselves have certain corrosion, long-term corrosion will lead to safety accidents such as perforation and leakage in the transportation pipeline, thus causing great difficulties in the actual transportation of oil and gas. Therefore, in the actual development, relevant enterprises should actively take measures to improve the anti-corrosion performance of petroleum and natural gas pipelines and improve the anti-corrosion performance and quality of steel pipelines, thus […]

Recently Shipment to Mid Asia Projects

Design of half pipe jacket in cooling device of stirred reactor

What is a half pipe jacket? The middle part of the half pipe jacket is the kettle body. The outside of the kettle is longitudinally surrounded by the half pipe, and the half pipe is filled with circulating cooling water. The cross section of the half pipe is semicircular. The kettle body and the surrounding half pipe of the enamel reactor are welded together. The material used for the half pipe is sheet metal. Then, the sheet metal passes through the array forming rollers (concave cams) arranged in front and back. The rotation of the concave convex rollers drives the […]

Recently Shipment to Mid Asia Projects

Explanation of the process of improving the corrosion resistance of the steel ……

The performance of steel plate is usually different because of the service conditions, but the prerequisite for the corrosion resistance of steel plate surface has higher requirements. The quality of steel plate mainly includes shape, dimension, precision, shape and internal quality. The chemical composition, metallurgical quality and processing technology of steel will have an impact on the use of steel plate. This paper studies the effect of improving the surface corrosion resistance of steel plate by improving the rolling process. Cause analysis Surface structure analysis The thickness, composition and structure of oxide film on the surface of steel plate with […]

Recently Shipment to Mid Asia Projects

Stress analysis and strength evaluation of weld of high pressure industrial pi……

As the “blood vessel” of chemical industry, industrial pipeline plays an important role in chemical production. Most industrial pipelines are welded and installed on the construction site. Due to the complicated conditions on the construction site, the construction quality is easily affected. In addition, during the regular inspection process, it is often encountered that the on-site industrial pipelines do not conform to the design drawings. All the above reasons may lead to accidents in the operation of pressure pipelines, resulting in loss of personnel and property. How to ensure the safe operation of industrial pipelines has always been the key […]

Recently Shipment to Mid Asia Projects

Causes and preventive measures of metal corrugated hose cracking

This unit has three gasifiers, and each one has four process nozzles. The cooling water outlet pipelines of its burner all adopt metal corrugated hose connection to improve maintenance efficiency. After the metal corrugated hose runs for a certain period, leakage occurs, which seriously restricts production. The specifications of metal corrugated hoses are DN50mm, PN10MPa, the wall thickness is about 4mm, and the length is 3m. There are 24 metal corrugated hoses are manufactured according to GB/T14525-1993, and the materials used include: 304 loose flange, 304 connecting pipe, 1Cr18Ni9 wire mesh, 304 corrugated hose. The internal medium of the metal corrugated hose is […]

Recently Shipment to Mid Asia Projects

How can pipeline leakage be solved without parking?

In the production process of chemical enterprises, pipelines are the main means of transportation for production devices, and the circulation of its material supply process depends on different specifications, realized by pipelines with different pressure levels and shapes, there are countless flanges, elbows, welds and other interfaces in the continuous bending chemical pipeline, if there is one welding junction failure or leakage out of control, it will be a serious threat to the normal operation of the device. If it is toxic, harmful, flammable, explosive, corrosive media, such as leakage, prone to poisoning, fire, explosion and other casualties, serious pollution […]

Recently Shipment to Mid Asia Projects

How to solve the problem that the inner end face of long weld neck flange is e……

The material of the long weld neck flange as shown in the figure is 40Cr, and the total length is 215mm. The diameter of the shaft body is 60mm and the length is 210mm. The outer surface of the cylinder is quenched, the hardened layer depth is 1-3mm, and the hardness is 45-50HRC. The diameter of the long welding neck flange part is 90mm, the thickness is only 5mm, the surface of the inner end surface is hardened, the hardened layer depth is 1-3mm, and the hardness is 45-50hrc. Induction hardening is a vertical scanning quenching, starting from the inner […]

العربيةБългарски简体中文繁體中文DanskNederlandsEnglishFrançaisDeutschBahasa IndonesiaItaliano日本語한국어LatinPortuguêsРусскийEspañolதமிழ்ไทยTürkçe