(1)How to indicate the brand number (1) Precision alloy grades are represented by a combination of Arabic numerals and Chinese pinyin letters. (2) The type of precision alloy is represented by the let...
There are iron oxide scales of different thicknesses on the surface of hot-rolled cnc machining stainless-steel billets. All surface defects of the steel billets cannot be exposed, which affects the c...
The DLP method (direct lead patenting process) is a controlled cooling process in which the wire rod is treated with two salt baths after hot rolling, referred to as the two-salt bath method. It was d...
As there are more and more control methods and means, there are many methods used to control pneumatic actuators in actual industrial daily life and industrial control. The following are commonly used...
Most of the iron ores in Xinjiang, Anhui, Hubei, Jiangsu and other places in my country contain pyrrhotite to varying degrees; in addition, some of the iron ores imported into my country from abroad a...
For small-sized high-speed wire rod rolling, when the exit speed of the finished product is greater than about 70m/s, the moment the tail of the rolled piece leaves the reducing and sizing machine (ex...
1. Overview of the representation method of steel grades in my country The grade of steel, referred to as steel grade, is the name given to each specific steel product and is a common language for peo...
The main raw materials for smelting carbon fiber by 3d printing ferromanganese by the blast furnace method include manganese ore, coke and flux, limestone, dolomite (and combustion-supporting air or o...
The deoxidation method will affect the type of inclusions in the steel, the fluidity of the molten steel and the cleanliness of the steel, so it is very important to choose the deoxidation method. Gen...
Overview Various types of PLCs used in automation systems, some are installed centrally in the control room, and some are installed dispersedly on individual equipment at the production site. Although...
Futures trading: refers to a transaction in which the buyer and seller do not deliver immediately after the transaction is completed, but perform delivery procedures according to the transaction price...
(1) Horizontal two-roll tandem rolling mill. The working stands mostly use closed rolling mills, and prestressed rolling mills and short-stressed rolling mills are also used. Generally, the longitudin...
The production process of cold-rolled strips is to remove foreign matter such as rolling oil, machine oil, iron dust and dust attached to the surface of cold-rolled strips before annealing. Degreasing...
1. What types of iron ores are commonly used in blast furnaces? What are their characteristics? Answer: Industrial iron ore is named after the iron-containing mineral deposits in which the iron conten...
1. The Origin of Futures Trading The futures market first sprouted in Europe. As early as the ancient Greek and Roman periods, there had been central trading venues, bulk barter transactions, and trad...
At present, split rolling is used most in bar production, and among bar split rolling methods, the split wheel method dominates. The slitting wheel slitting rolling method has developed rapidly in the...
From a heat transfer point of view, to improve the heat transfer between the spray water droplets and the slab in the secondary cooling zone is to increase the water flow density and quickly take away...
The canned pump is composed of a centrifugal pump and a three-phase asynchronous canned motor coaxially. It does not require mechanical seals and has no leakage. It is suitable for transporting variou...
Chapter 1 General Provisions Article 1 In order to ensure the safe, stable and long-term operation of pressure pipelines in chemical enterprises and protect the safety of people’s lives and prop...
The Mizushima Steel Plant of Kawasaki Steel Company in Japan is equipped with a special grate bar that moves with the trolley on the sintering mini exquisite power amplifier machine enclosure trolley ...
0 Introduction With the continuous improvement of social living standards, people have put forward higher requirements for their working and living environment. Comfort, health, energy saving and poll...
Germany’s VAW Aluminum Technology Company has researched and developed a new aluminum rotation centrifugal casting die-casting technology (Rotacast-diecasting). Castings produced using this tech...
The mechanical properties of steel are important indicators to ensure the final performance (mechanical properties) of steel. It depends on the chemical composition and heat treatment system of the st...
Refrigeration capacity: 180KW-540KW Applicable areas: areas with sufficient water volume, moderate water temperature and suitable water quality Applicable scope: 3000 m²-6000 m² shopping malls, office...
Analysis of process paths to meet the new safety standards for electric water heaters The new safety standard GB4706.12-2006 “Special Requirements for Safe Storage Electric Water Heaters for Hou...
The hole design assistance includes the following basic principles: (1) Choose a reasonable hole system. The reasonable selection of the pass system not only affects whether steel can be produced more...
Ultra high molar mass polyethylene (UHMWPE) is a thermoplastic engineering plastic with excellent comprehensive properties. At present, UHMWPE pipes have been widely used in fields such as mining, ele...
The transformer capacity per unit furnace capacity of high-power electric arc furnace (EAF) is higher than that of ordinary power steelmaking electric arc furnace. As a reference value for determining...
Oiling is intended to prevent steel plates from rusting. The oil should not deteriorate within one year under dry storage conditions at room temperature; it can be easily removed by the alkaline oilin...
The pressure resistance of copper pipes is several times or even dozens of times that of plastic pipes and aluminum 5083-alloy. It can withstand the highest water pressure in today’s buildings. ...
Fluorite is a flux, and its main component is CaF2. The melting point of pure CaF2 is 1418°C. Fluorite also contains components such as SiO2 and S, so the melting point is around 930°C. After being ad...
1. Introduction to drive shaft assembly (combined with specific assembly diagram) Transmission shaft, English PROPELLER (DRIVING) SHAFT. Power is transmitted between two axes with different axes and e...
1. Power-on self-diagnosis: The so-called power-on self-diagnosis refers to the diagnosis automatically performed by the system’s internal diagnostic program when the control system is powered o...
The crystallization segregation formed when high-carbon chromium copper parts ingots are cooled, and the carbide-enriched zones that extend during hot rolling deformation are called banded carbides, w...
Adjusting the position of the oxygen lance can adjust the interaction between the oxygen jet and the molten pool, thereby controlling the blowing process. Therefore, the oxygen lance position is an im...
The rolled finished steel, especially the section steel, is often not straight enough and its cross-sectional metal u shaped bracket is not correct enough. Steel materials may also bend or end torsio...