2023-10-19 Steel World Comments Off on Attention to organizational control of steel bar rolling
Due to the deformation and temperature characteristics of the steel bar rolling process, it is difficult to control the structure. Controlled rolling can only be achieved by controlling the temperatur...
2023-10-19 Steel World Comments Off on Analysis of the Mechanism of Shaft Voltage and Shaft Current Generation in Variable Frequency Motors
1 Introduction When the motor is driven by a sine wave power source, the shaft voltage is generated through the alternating magnetic flux of the motor shaft. These magnetic links are caused by factors...
2023-10-18 Steel World Comments Off on Mechanism of Lubrication in Hot Rolling Process
The main purpose of lubrication in hot rolling process is to reduce roller wear, reduce rolling force, and improve product quality. So far, the research on lubrication technology for hot rolling proce...
2023-10-18 Steel World Comments Off on 1-21121 Operating Regulations for Initial Rolling Machine
Productivity: 50-60 m3/hour 1. Comply with the General Operating Regulations for Foundry Equipment. 2. Check the wear of each scraper, and if the wear is severe, the scraper must be replaced. 3. Befor...
2023-10-18 Steel World Comments Off on Adding ladle slag modifier to the ladle during the tapping process
Although slag blocking measures are taken during tapping, it is difficult to completely block the high oxidizing final slag. Therefore, while improving slag blocking efficiency, ladle slag modifiers s...
2023-10-18 Steel World Comments Off on Application and Maintenance of Hydraulic Plunger Pump in Construction Machinery
The efficiency of the hydraulic system of construction machinery mainly depends on the volumetric efficiency of the hydraulic pump. When the volumetric efficiency drops to 72%, routine maintenance is ...
2023-10-18 Steel World Comments Off on Selection and Engineering Assumption of Air Cooled Heat Pump Cold and Hot Water Units
The air-cooled heat pump cold and hot water unit is a new type of air conditioning unit that began to be applied in China in the 1990s. This type of unit can provide both cooling and heating, eliminat...
2023-10-18 Steel World Comments Off on Precautions for distinguishing and preventing steel business risks
The operation of steel products involves large-scale and large-scale business operations, with high risk characteristics. In large-scale and large-scale business operations, it is of great significanc...
2023-10-18 Steel World Comments Off on dry cooling
The so-called “dry” cooling refers to the secondary cooling zone that does not spray water and relies entirely on the radiation of the stand casting billet and the indirect cooling method ...
2023-10-18 Steel World Comments Off on Mechanism and electrochemical experimental results of bacterial oxidation leaching of gold arsenic containing pyrite
1、 Preface With the increasingly serious global ecological problems, the drying up of easily selected and easily treated gold ore resources, and the advancement of metallurgical skills, metallurgical ...
2023-10-18 Steel World Comments Off on General technology of automatic spray control valve applied to hydraulic support
MT/T765-1997 Approved by the Ministry of Coal Industry of the People’s Republic of China on December 30th, 1997 Implemented on June 1st, 1998 1 Scope This standard specifies the requirements, te...
2023-10-18 Steel World Comments Off on Various methods for judging tension
(1) Current judgment method. By using the fluctuation of the current index corresponding to each frame during investment casting steel biting, it is determined whether there is tension or thrust betwe...
2023-10-18 Steel World Comments Off on Selection of Die Forging Hammer and Hot Die Forging Parting Line (Face)
Steel (carbon steel and alloy steel) die forgings (hereinafter referred to as die steel parts) with a weight of no more than 250kg and a length of no more than 2500mm produced in batches on die forgin...
2023-10-18 Steel World Comments Off on Precautions for liquid level control of crystallizers
Maintaining a stable liquid level in the mold is one of the keys to reducing stainless steel leakage and achieving good surface quality of the billet. If the liquid level fluctuates by more than 10mm ...
2023-10-18 Steel World Comments Off on Scope of use of soft polyvinyl chloride pipes
1. Theme and Scope of Application This standard specifies the classification, technical requirements, test methods, inspection rules and markings, packaging, transportation, and storage of flexible po...
2023-10-18 Steel World Comments Off on Technical specification for building drainage hard polyvinyl chloride pipeline engineering (1)
1 General 1.0.1 In order to achieve advanced technology, economic rationality, safety and applicability, and ensure quality in the design, construction, and acceptance of building drainage hard polyvi...
2023-10-18 Steel World Comments Off on Hunter casting and rolling method
A continuous casting and rolling method for non-ferrous metal alloys. The process of rolling molten metal into thin slabs through the gaps of a pair of horizontally arranged rollers. This method was j...
2023-10-18 Steel World Comments Off on Treatment of explosive splashing during smelting
Explosive splashing occurs during smelting, usually due to low process temperature, delayed C-O reaction, and slag Σ FeO content of over 20% can cause explosive splashing. Furthermore, when operating ...
2023-10-18 Steel World Comments Off on The structure and function of the main reducer
Because the speed of the main motor is generally higher than the required roller speed, a reducer must be installed in the main train of the rolling mill. The function of the reducer is to change the ...
2023-10-18 Steel World Comments Off on Application of Dual Valve Core Control in Hydraulic Multi way Directional Valve
The control of the inlet and outlet of traditional directional valves is carried out through a single valve core. The corresponding relationship between the two oil ports has been determined during th...
2023-10-17 Steel World Comments Off on Advantages of magnesium injection desulfurization in molten iron compared to other desulfurization processes
Compared with other desulfurization 9517 coil comb aluminum alloy custom machining, the magnesium spray desulfurization process for molten iron has the following significant advantages: (1) High desul...
2023-10-17 Steel World Comments Off on Magnetization roasting experiment of a certain oolitic high phosphorus hematite and limonite in a rotary kiln
The steel industry is one of the pillar industries of the national economy, especially in China’s high-speed development of the national economy. There are two ways to solve the shortage of iron...
2023-10-17 Steel World Comments Off on Principle and Method of Sulfur Stamp Inspection for Continuous Casting Billets
Sulfur printing is a method of displaying sulfur segregation on a sample using photographic paper. The principle is that sulfuric acid on the paper reacts with sulfides (FeS, MnS) on the sample to gen...
2023-10-17 Steel World Comments Off on On the selection of pumps for sewage pumping stations
1、 Preface Shanghai is a bustling modern city with the goal of becoming an international economic, financial, and trade center. This requires the city to have abundant water resources and a superior w...
2023-10-17 Steel World Comments Off on Practice of Improving the Grade of Iron Concentrate
The ore processed by Shandong Jinling Iron Mine (referred to as Jinling Iron Mine) is a high-temperature hydrothermal contact metasomatic skarn type polymetallic magnetite. The ore type is mainly magn...
2023-10-17 Steel World Comments Off on Overview of Anshan Alloy Pipe Factory
Large steel complex. Located in Anshan City, Liaoning Province, China. Its predecessor was South Manchuria Railway Co., Ltd., which began construction in 1916. After Japan surrendered, most of the equ...
2023-10-17 Steel World Comments Off on Commonly used materials for cross rolling rolls
Due to the prominent edges and corners of the oblique rolling roller, the unit pressure and speed difference during rolling are large, so the roller material is required to be wear-resistant under hig...
2023-10-17 Steel World Comments Off on Slow type Steyr controlled cooling
What is slow type Steyr controlled cooling and what are the suitable steel grades? Slow type Steyr controlled cooling is designed to meet low-speed requirements such as cnc machining carbon fiber ste...
2023-10-17 Steel World Comments Off on Materials and Applications of ABS Alloy Pipes
ABS alloy pipe is a plastic alloy with higher strength, excellent performance, better toughness, and better weather resistance obtained by blending and modifying ABS resin with other plastics and addi...
2023-10-17 Steel World Comments Off on Lagrangian stress tensor
The asymmetric stress tensor described by the initial configuration (see elastic-plastic finite element method) when studying large deformations. Before solving deformation mechanics problems, it is n...
2023-10-17 Steel World Comments Off on Requirements for raw materials in steel rolling production
The correct selection of the type, cross-sectional shape, size, and weight of the billet is of great significance for steel rolling production facilities. Reasonable selection of billets not only impr...
2023-10-17 Steel World Comments Off on CNC machine tools and correct selection
The selection of CNC cutting tools and the determination of cutting parameters are important contents in CNC machining technology. They not only affect the machining efficiency of CNC machine tools, b...
2023-10-17 Steel World Comments Off on Tempering of steel
Reheating quenched steel to a certain temperature and then using a certain method for cooling is called tempering. Its purpose is to eliminate the internal stress generated by quenching, reduce hardne...
2023-10-17 Steel World Comments Off on Design Principle and Selection of Pressure Reducing Valve
1、 Working principle of pressure reducing valve Direct acting pressure reducing valve Figure 14-1a shows the structural diagram of a direct acting pressure reducing valve with an overflow valve (refer...
2023-10-17 Steel World Comments Off on Achievements and Development Plan of Mineral Processing Technology in China’s Iron Mines
The total reserves of iron ore in China are about 46.232 billion tons (excluding Taiwan Province), of which the reserves above Grade C are about 22.031 billion tons [1,2], accounting for about 17.86% ...
2023-10-17 Steel World Comments Off on Hot delivery and charging of continuous casting billets and their advantages
Compared with traditional production processes from molten steel to billets, continuous casting technology saves a lot of energy and materials. After the energy crisis of the 1970s, energy conservatio...
