2023-10-30 Steel World Comments Off on Knowledge about cold-dip galvanized steel pipes
You can check it in the hardware manual. Generally speaking, the diameter of the pipe can be divided into outer diameter, inner diameter and nominal diameter. The outer diameter of a seamless steel pi...
2023-10-30 Steel World Comments Off on blank mold groove
The die slot provided on the forging die for die forging to complete the initial blank making step (see forging step) is used to forge the blank into a pre-forged blank with a shape as close as possib...
2023-10-27 Steel World Comments Off on Key factors that should be paid attention to in mold design to prevent forgings from folding
Abstract: The folding defect of aluminum alloy die forgings is the most important defect among many defects and the main waste among die forging waste products. Conduct analysis and research on this p...
2023-10-27 Steel World Comments Off on What is the standard of 0Cr18Ni9 stainless steel plate?
0Cr18Ni9 stainless steel plate is the most widely used stainless steel heat-resistant steel and is used in food equipment, general chemical equipment, and atomic energy industrial equipment. Generally...
2023-10-27 Steel World Comments Off on 0cr18ni9 stainless steel plate specifications introduction
Cr18ni9 stainless steel has good corrosion resistance, heat resistance, low temperature strength and mechanical properties. It has good hot workability such as stamping and bending, no heat treatment ...
2023-10-27 Steel World Comments Off on Sheet stamping
Sheet stamping A metal plastic processing method in which metal sheets and strips are stamped into various parts on the mold of a press. Generally, the sheet metal thickness of blanking parts is less ...
2023-10-27 Steel World Comments Off on Basic knowledge of hot rolled strip
Generally, their specifications are written as (Thickness*Width*C, C means length. Since it is usually rolled up, it is expressed by C. If it is a rectangular steel, it will have a length). For exampl...
2023-10-27 Steel World Comments Off on Summary of control valve specifications
standard encdoing Standard Chinese name Standard English name GB/T13852-1992 Marine hydraulic control valve technical conditions General specification of hydraulic control valves for ship GB/T17490-19...
2023-10-27 Steel World Comments Off on shuttle rolling
A rolling method in which the rolled pieces alternately travel back and forth between different pass types in the same stand or on different stands in the same row. This rolling method is widely used ...
2023-10-27 Steel World Comments Off on Analysis and measures of causes of bearing damage
Why are bearings damaged? Bearings are precision parts, so they require considerable caution when using them. Even if high-performance bearings are used, if used improperly, the expected performance r...
2023-10-27 Steel World Comments Off on Heating and sanitary equipment pipeline installation and construction technology
1 Scope This process standard is applicable to indoor and outdoor heating and sanitary equipment pipeline installation projects in civil and general industrial buildings. 2 Construction preparation ...
2023-10-27 Steel World Comments Off on Explanation of the categories of steel number expressions in my country
1. Carbon structural steel ① consists of Q + number + quality grade symbol + deoxidation method symbol. Its steel number is prefixed with “Q”, which represents the yield point of the steel...
2023-10-27 Steel World Comments Off on Basic principles of low carbon ferrochrome
1. Low carbon ferrochromium is used to produce medium and low carbon structural steel, chromium steel, and alloy structural steel. Chromium steel is often used to make gears, gear shafts, etc. Chromiu...
2023-10-27 Steel World Comments Off on Characteristics of the secondary cooling zone structure of billet continuous caster
For billet continuous casting machines, due to the small cross-section of the billet and the short metallurgical length, generally no more than 10m, the bulging deformation of the billet is not the ma...
2023-10-27 Steel World Comments Off on What are the welding processes for low alloy steel?
Low alloy steel is made by adding a certain amount of alloying elements to carbon steel. The mass fraction of the alloying elements generally does not exceed 5% to improve the strength of the steel an...
2023-10-27 Steel World Comments Off on Countermeasures to prevent decarburization during forging
Countermeasures to prevent decarbonization mainly include the following aspects: 1) When heating the workpiece, reduce the heating temperature and residence time at high temperature as much as possibl...
2023-10-27 Steel World Comments Off on Features of closed rolling mill
The closed porous groove two-high mill is the most common form of small rolling mill. In recent years, when designing this kind of rolling mill, the reduction device is often placed between the upper ...
2023-10-27 Steel World Comments Off on The main causes of accidents such as knotting of loopers and breakage of rolled parts
When the rolled piece has just been bitten by the next rolling mill or has been rolled for a period of time. Suddenly, piles of steel appeared on the stand between the two rolling mills, and the heads...
2023-10-27 Steel World Comments Off on What are the standards for low alloy steel plates?
1. Low alloy structural steel plate (GB3274-88) Low alloy structural steel plate is made of hot rolling low alloy structural steel. Low alloy steel plates are both killed steel and semi-killed steel p...
2023-10-27 Steel World Comments Off on Rolling time, gap time, cycle time and rolling rhythm
The rolling mill operating diagram represents and reflects the relationship between rolling passes and time. The random rolling time (T rolling), gap time (T interval), rolling rhythm (T) and rolling ...
2023-10-27 Steel World Comments Off on Cold processing production technology
The general diagram of the cold working production process is shown in Figure 1. Figure 1 General diagram of the cold working production process. Cold working includes cold rolling and cold drawing. B...
2023-10-27 Steel World Comments Off on Description of common energy-saving technologies
Electronic power-saving technology refers to the methods and methods that apply power electronics technology and microelectronics technology to significantly reduce the power consumption in the produc...
2023-10-27 Steel World Comments Off on Uses of electroplating zinc
Electro-galvanizing is rolled by a cold tandem rolling unit and then annealed by a CAPL unit before entering the electro-galvanizing unit. After surface cleaning and electroplating, phosphating, passi...
2023-10-26 Steel World Comments Off on Microalloyed steel should not be solid solution strengthened
Because solid solution strengthening is generally not used as the main strengthening method for microalloyed steel. The reasons are as follows: (1) Solid solution strengthening originates from lattice...
2023-10-26 Steel World Comments Off on Crystallizer vibration parameters
The main vibration parameters of the crystallizer are amplitude and frequency. The crystallizer vibration waveform, frequency and amplitude should be reasonably selected according to the cross-section...
2023-10-26 Steel World Comments Off on Roller service life
In addition to considering the wear of the roll surface, the roll scrapping mainly depends on the size of the final working roll diameter. If the roll diameter is too small, it affects the strength of...
2023-10-26 Steel World Comments Off on Chromate light passivation
Passivation – Under certain conditions, when the potential of 3d printing metal moves in the positive direction due to an external anodic current or a local anodic current, the state of the orig...
2023-10-26 Steel World Comments Off on Basic properties of electrogalvanized sheets
1. Classification of steel plates (including steel strips): 1. Classification by thickness: (1) thin plate (2) medium plate (3) thick plate (4) extra thick plate 2. Classification according to product...
2023-10-26 Steel World Comments Off on my country’s plastic pipe industry trends and development directions
Industry Status In 2005, my country’s plastic pipe industry developed rapidly, and various economic and technical indicators improved significantly compared with the previous year. According to ...
2023-10-26 Steel World Comments Off on Compressor problem causes analysis and measures
Compressor is a machine used to increase gas pressure and transport gas. From an energy point of view, a compressor is a machine that converts the power energy of the prime mover into gas pressure ene...
2023-10-25 Steel World Comments Off on liquid core straightening
During the continuous steel casting process, when the core of the cast slab is not completely solidified and liquid steel still exists, the continuous casting slab straightening technology is used to ...
2023-10-25 Steel World Comments Off on Precautions for trial rolling
The main precautions for trial rolling are: 1) In accordance with the main motor starting and quality management system and rolling mill operating technical operating procedures, notify relevant posit...
2023-10-25 Steel World Comments Off on What are the dimensions and specifications of galvanized steel pipes?
Galvanized steel pipes are divided into cold-dip galvanized pipes and hot-dip galvanized pipes. Cold-dip galvanized pipe is electro-galvanized. The amount of galvanizing is very small, only 10-50g/m2....
2023-10-25 Steel World Comments Off on Composition of water cooling system after rolling of rebar or round steel
The system consists of cooling device system, cooling water system and microcomputer detection and control system. The cooling device system consists of a water cooling device, a pinch roller and a tr...
2023-10-25 Steel World Comments Off on Achieve quick replacement of cold shear blades
Cold shearing is used to cut steel after cooling, so the force is greater. The connection requirements between the shear body and the shear blade are relatively high and must be able to withstand larg...
2023-10-25 Steel World Comments Off on What is the density of 316l stainless steel plate?
According to the test, 316L stainless steel has excellent corrosion resistance, especially pitting resistance, due to the addition of Mo; it also has good high-temperature strength; it has excellent w...
