Gravity beneficiation is referred to as gravity separation. Gravity separation is also one of the important beneficiation methods for selecting iron ore, especially weakly magnetic iron ore. Generally...
On the forging die used for die forging, it is used to reduce the partial cross-sectional area of the blank and increase the cross-sectional area of another part so that the volume distribution meets ...
The metallographic structure of the material can be changed through heat treatment to ensure the necessary strength and hardness, dimensional stability at high temperatures, thermal fatigue resistance...
Ore beneficiation benefits ironmaking, but the ore concentrator has to pay a price. The investment in ore beneficiation is mainly reflected in increasing investment in infrastructure and technical tra...
When pouring boiling steel in continuous die casting, due to the boiling of molten steel in the crystallizer, honeycomb bubbles are easily exposed and the molten steel overflows, affecting the surface...
Vanadium-titanium magnetite is a kind of symbiotic magnetic iron ore mainly containing iron, titanium and vanadium. Most of the vanadium and iron minerals are isomorphous in the magnetite. This type o...
The main purpose of automatic looper control is to maintain tension-free rolling between stands. Currently, digital looper control technology is mostly used in high-speed wire production. Digital phon...
In the valve body processing of various types of wedge gate valves, there is usually the problem of processing M85×2-6H threads on the inclined wedge surface with a wedge angle of 2°5′. In order to ...
Converter volume ratio (V/T) refers to the ratio of the volume V (m3) of the free space in the converter cavity to sheet metal charging amount (molten iron + scrap steel + pig iron block unit t). If t...
The above figure gives the general situation of flange classification. Let’s take a detailed look at various types of flanges. According to the degree of overall properties: (1) Integral flange 1． F...
The process of punching the solid blank into a capillary tube by extrusion method. There are two types of perforated capillary tubes: those with cup bottoms and those with penetrations, which are used...
Through the analysis of vibration faults of large deep well pumps and various possible causes of vibration, a method for simple on-site judgment of motors and pumps is proposed. Panzhihua Iron and Ste...
During the construction of plastic pipelines, plastic flanges are often used to connect with cast iron flanges, iron valves and other pipe fittings. There are two main types of flanges in our factory:...
1) Under the condition that the structural strength of the casting is met, the die-casting mold should adopt a thin-walled structure. In addition to reducing the mass of the casting, this also reduces...
Lost foam casting (also known as real mold casting) is to bond and combine foam models similar in size and shape to the castings into model clusters. After brushing with refractory paint and drying, t...
Metal materials are metallurgical products. The production, ordering, transportation, use, storage and inspection of metal materials must be based on unified technical standards – metallurgical ...
The flange connection structure is an assembly consisting of a pair of flanges, several bolts, nuts and a gasket. It is an assembly drawing of the overall structure of the pipe flange connection. In p...
The swing head swings around its apex. The apex O of the swing head mold must be located on the OM axis (machine axis) to ensure the dimensional accuracy of the swing grinding part and the correct mol...
Correctly select the end connection form of the control valve and the process pipeline (annular surface connection/convex surface connection/wafer type). If equipped with a counter flange, the valve s...
Asymmetrical rolling is a rolling process in which the deformation conditions are asymmetrical to the horizontal center plane of the rolled piece. The deformation conditions of rolling include the ext...
Cold heading is a forging forming method that thickens the top of a bar or wire at room temperature. Cold heading is mainly used to manufacture bolts, nuts, nails, rivets, steel balls and other parts....
1 Scope This standard specifies the types and dimensions of tongue and groove steel pipe flange covers with nominal pressures PN of 1.6, 2.5, 4.0, 6.3, 10.0, 16.0MPa and nominal pressures PN of 5.0, 1...
Inspection Regulations for Pressure Pipelines of Chemical Enterprises; 1 General Principles 1.1 In order to ensure the safe operation of chemical pipelines and protect the safety of people’s liv...
When the molten metal stays in the mold cavity for a long time, the mold is closed and pressure is applied, and the molten metal is squeezed to fill the mold, forming a cold gap between this part of t...
The strip-shaped protrusions on the surface of the wire along the rolling direction are called ears, and there are single-sided ears and double-sided ears. Due to tension in the production of high-spe...
1 Scope This standard specifies the types and dimensions of concave and convex steel pipe flange covers with nominal pressures PN of 1.6, 2.5, 4.0, 6.3, 10.0, 16.0MPa and nominal pressures PN of 5.0, ...
Before the 1980s, controlled rolling technology was not perfect, the process was very complex and confusing, and the role of microalloying was elusive depending on the controlled rolling system. The c...
Different blowing positions will affect the mixing effect. Hydraulic models and production practices show that the best position of the blowing point should usually be 1/2 to 2/3 of the radius of the ...
Design of railway signaling for metallurgical works The design of railway signals that need to be set up in the railway transportation system of metallurgical plants. Railway signaling is a general te...
Often referred to as galvanized pipes, the purpose of galvanized pipes is that the iron pipes used for gas and heating are also galvanized pipes. Galvanized pipes are used as water pipes. After a few ...
Cyanidation of steel is also called “carbonitriding”. The initial cyanide is carried out with cyanide salt, so it is generally called ‘cyanation’. It is a chemical heat treatme...
The metal melt discharged from the furnace is continuously processed to remove gases, inclusions and harmful elements before casting, which is also called melt online processing. The purification effe...
Abstract: By analyzing the thermal parameter control requirements of the secondary loop of a pressurized water reactor nuclear power plant and the operating characteristics of electric fixed-speed fee...
A continuous galvanized pipe painting production process and equipment. The process includes the following steps: passivation step, cleaning step; painting step; curing step. Before the painting step,...
The characteristics of the oval-square hole system are as follows: (1) Large elongation coefficient; (2) The position of the corners of the rolled piece can be changed, so that the metal spinning surr...
When continuously shearing to length, the following main factors affect the accuracy of the length: there is an error between the linear speed of the rolling material movement and the cold shearing op...