The roughing stand roll ring of the section steel universal rolling mill mainly considers the resistance to hot cracking and the prevention of steel adhesion. For this reason, the number, shape and di...
The characteristics of roll forging are: 1) The required working load is smaller: The forming force required to continuously apply local pressure on the blank is smaller than that of die forging. Gene...
High vanadium wear-resistant alloy is about to enter the industrial trial production stage A new type of wear-resistant material with the highest wear resistance and impact resistance in China, a high...
During the continuous operation of the strip rolled on the fully continuous cold rolling mill, the computer control system automatically sets the rolling process parameters and procedures according to...
The gas cabinet is one of the important equipment in the converter gas recovery system. It is mainly used to store the recovered converter gas so as to supply users with gas with stable composition an...
Abstract: This article introduces the working principle, main structural design calculation and test conditions of the ultra-high pressure pneumatic pressure reducing valve, and analyzes the structura...
Studying the flow field in the pump, especially the mixed-phase flow field, is the key to improving the performance of deep well pumps. As PIV technology, LDV technology and ultrasonic technology beco...
A discussion on advantage of air chambers for water hammer for diminish water hammer when cut off pump. (Nanchang Engineering &Research Institule of Nonferrous Metals Nanchang 330002) This paper i...
The main component of siderite is ferrous carbonate, which is generally in the form of granular crystals or dense blocks, spheres, and gels without crystals. The color is generally gray-white or yello...
Magnetism is one of the fundamental characteristics of matter. Among more than one hundred known elements, three elements, iron (Fe), nickel (Ni), and cobalt (Co), are ferromagnetic. Compounds contain...
The high corrosion rate of pipe fittings in naphthenic acid plants has always been a hot and difficult issue in anti-corrosion of domestic refinery equipment. Due to corrosion, the unit cannot run smo...
Steam is mainly used in the steel rolling workshop for: flushing gas pipelines, keeping lubricating oil warm in winter, heating the pickling solution and water washing tank in the pickling section, co...
With the continuous improvement of people’s living standards, the decoration of bedrooms is becoming more and more beautified. It is the minimum requirement for decoration to bury various indoor...
Compared with traditional slabs, the heat flow in the mold of thin slab continuous die casting is large, and the solidified billet shell near the meniscus generates higher surface tension, which often...
Standard standards for commonly used stainless steel flanges: (PL, SO, WN, BL, Th) Italian stainless steel flange standard: UNI2276, 2277, 2278, 6083, 6084, 6088, 6089, 2280, 2281, 2282,...
Drawing is a metal plastic processing method in which the blank is pulled through a tapered die hole to reduce the cross-section to obtain products with precise dimensions and smooth surfaces. Drawing...
Stamping is a processing method. The blanks are mainly plates, strips, pipes and other profiles. Stamping equipment is used to obtain the required shape and size of the parts through the action of the...
1. Overview As the main facility of municipal construction and management projects, drainage pumping stations (hereinafter referred to as pumping stations) are responsible for the important task of ur...
In China’s ventilation duct industry, according to traditional domestic construction techniques, angle steel flange connections are used to connect pipe sections between air ducts. Due to the co...
An experimental study carried out at Udholm Tools GmbH in Hagforsch, Sweden, has identified the influence of ladle-adherent deposits on the formation of non-metallic inclusions during ladle processing...
Overview Metal mold casting, also known as die casting, is a casting method that pours liquid metal into a metal mold to obtain castings. Casts are made of metal and can be reused many times (hundreds...
Since the reform and opening up, with the continuous and stable development of my country’s socialist economic market, the application of pipeline gas industry in urban construction has graduall...
The processing deformation of the rolled piece on the finishing mill causes the heat value generated by the bar to exceed the heat loss caused by radiation, conduction and convection, so the temperatu...
The temperature of the sulfuric acid solution has a much greater impact on the pickling speed than the concentration. As can be seen from Figure 1, when the temperature rises from 18°C to 60°C, the te...
Brief description of flange Pipe flanges, their gaskets, and fasteners are collectively called flange joints. Flange joint is a component that is widely used in chemical engineering design and covers ...
Abstract: The causes of leakage of general-purpose centrifugal pump mechanical seals are analyzed, and various leakage phenomena and possible parts that may cause leakage are explained. At the same ti...
1. The redox potential of the reducing agent must be sufficient to reduce metal ions and precipitate the metal. 2. The plating bath needs to be stable and inactive when not in use. It will only start ...
The seal of the bar rolling mill combined with the plate quick joint is easily damaged and causes leakage. The reasons are as follows: (1) The impact of the increased elevation error of the equipment ...
The methods for extracting vanadium from vanadium-titanium magnetite can be summarized into two types: the fire method is to extract vanadium indirectly through vanadium ferromagnetite concentrate or ...
The axial gasket and damping pad of the bevel gear shaft of the quick-change frame bevel gearbox are frequently damaged. The reason is that the axial load of the bevel gear shaft is too large, causing...
The methods for extracting vanadium from vanadium-titanium magnetite can be summarized into two types: the fire method is to extract vanadium indirectly through vanadium ferromagnetite concentrate or ...
Abstract: The method of using the fire pump speed for self-checking is analyzed. Self-checking methods can be divided into normal-speed self-checking methods and low-speed self-checking methods. The l...
After the round steel is rolled out of the finished pass, it is processed in the width direction in a pass composed of two vertical rollers to obtain high-precision bars and wire rods. When rolling by...
1 Introduction Natural gas engine-driven heat pump units (GasEngine-DrivenHeatPump, hereinafter referred to as gas engine heat pumps) have been widely used in countries such as Japan, the United State...
Defects caused by improper cooling after forging usually include the following: 1. Cooling cracks During the cooling process after forging, large thermal stress will be generated inside the forging du...
1. In terms of raw materials, the strength of vanadium-titanium sinter is generally lower than that of ordinary sinter. Its drum index is generally 81 to 82%, while the drum index of ordinary sinter c...