2021-10-18 Steel World Comments Off on Membrane technology application: flexible and economical water treatment techniques
Membrane technology is a new technology that can be used flexibly. This article introduces two application cases of membrane technology in practical engineering. The water supply department of Carmich...
2021-10-18 Steel World Comments Off on Internal cracks generated during straightening of continuous casting slab
In continuous casting production, the limiting factor to increase the drawing speed, One is that the billet may be deformed in the secondary cooling zone and break out of the crystallization zone; The...
2021-10-18 Steel World Comments Off on What is 4Cr13 steel? What are the application areas of 4Cr13 steel?
●Characteristics and scope of application: Note: This steel has poor weldability, so attention must be paid when using it. ●Chemical composition: Manganese Mn: ≤0.80 Sulfur S: ≤0.030 Phosphorus P: ≤0....
2021-10-18 Steel World Comments Off on GB T12241-2005 safety valve general conditions
1 Scope This standard specifies the terminology, design and performance requirements, testing, displacement determination, equivalent displacement calculation, marking and lead sealing, quality assura...
2021-10-18 Steel World Comments Off on Maintenance of mechanical seals for pumps
There are many types of mechanical seals for maintenance pumps with mechanical seals, with different models, but there are mainly five leakage points: (l) the seal between the shaft sleeve and the...
2021-10-18 Steel World Comments Off on What is S50C steel? What are the applications of S50C steel?
Through the implementation of spheroidizing treatment, the cutting performance of this type of carbon steel can be improved. The steel is usually used after tempering to a hardness of 19~22HRC to incr...
2021-10-18 Steel World Comments Off on The working principle of the three-roll planetary rolling mill
The main train of the three-roll planetary rolling mill is divided into two parts: the rolling mill body and the transmission. The rolling mill body is composed of a slewing disk system, a central sle...
2021-10-18 Steel World Comments Off on What is SKH9 steel? What are the applications of SKH9 steel?
(%): Carbon: 0.8-0.9 Forging: 1.100～900℃ Annealing: Heat to 800-850°C, stay at this temperature for two to four hours, and let it cool down in the furnace. Quenching: first preheat to 550-600°C, then...
2021-10-18 Steel World Comments Off on Experiment on the separation of high-iron chromite by weak magnetic-strong magnetic technology
Chromium is an important strategic resource and an important raw material for the stainless steel industry. It is also widely used in refractory materials, chemicals and light industry. With the devel...
2021-10-18 Steel World Comments Off on What are the two variables of hydraulic pump monitoring
1 Current situation After the reform and opening up, with the vigorous development of China’s economic construction, the valve industry has also shown a thriving vitality. Now there are thousa...
2021-10-18 Steel World Comments Off on Defects and Prevention of Lost Foam Casting-Sand Sticking
The molten metal penetrates into the sand mold to form a mechanical mixture of metal and sand. There are two situations: one is that the molten metal penetrates into the molding sand through the crack...
2021-10-18 Steel World Comments Off on What is FDAC steel? What are the applications of FDAC steel?
Carbon (C) 0.33～0.42 Manganese (Mn) 0.55～0.75 Alum (V) 0.30～0.80 Silicon (Si) 0.80～1.20 Chromium (Cr) 4.80～5.50 Molybdenum (M0) 1.20～1.60 Phosphorus (P) ≤0.030 Sulfur ( S) 0.10～0.151. The hardness is ...
2021-10-18 Steel World Comments Off on Selection of cutting parameters of TA15 and TB6 titanium alloy parts and tool technical parameters
The main machining method titanium alloy parts have a relatively large machining allowance, some parts are very thin (2～3mm), and the dimensional accuracy and shape tolerances of the main mating s...
2021-10-18 Steel World Comments Off on Insulation and soaking method
The steel ingot heating method uses the latent heat of the liquid core and its heat recovery effect to make the surface and the inside temperature of the steel ingot uniform. The specific steps are: a...
2021-10-18 Steel World Comments Off on What is the production process of ultra-low carbon clean steel
Before and after the secondary refining process, the secondary oxidation of molten steel caused problems in the production of clean steel. The ferrous oxide, manganese oxide, and silicon dioxide conta...
2021-10-18 Steel World Comments Off on What is 618HH steel? What are the applications of 618HH steel?
1. Good polishing and laser etching performance 2. Good processing performance 3. High purity and excellent uniformity 4. Better abrasion resistance, longer mold life, with the following advantages: 1...
2021-10-18 Steel World Comments Off on Characteristics of plastic pipes, operation steps and precautions
With the improvement of people’s living standards, environmental protection awareness and health concerns, a green building materials industry has been set off in the field of water supply and d...
2021-10-18 Steel World Comments Off on Compound extrusion
Compound extrusion (compound extrusion) is an extrusion method in which metal flows in two opposite directions simultaneously in the space between the extrusion rod and the extrusion barrel and the ex...
2021-10-18 Steel World Comments Off on Specifications of the Ministry of Machinery Industry-the way of compiling valve models
This standard applies to gate valves, globe valves, throttle valves, ball valves, butterfly valves, diaphragm valves, plug valves, check valves, safety valves, pressure reducing valves, traps, and plu...
2021-10-18 Steel World Comments Off on What is XW42 steel? What are the application areas of XW42 steel?
①High wear resistance; ②High compressive strength; ③High surface hardness after hardening; ④Excellent overall hardenability; ⑤It has excellent stability when hardened; in addition to being suitable fo...
2021-10-18 Steel World Comments Off on What is the application of organic peroxide to produce WS-700 special resin for PVC pipe fittings
Introduction At present, rigid polyvinyl chloride (PVC) pipes and fittings are one of the application fields of polyvinyl chloride products. After years of vigorous development, domestic special pipe ...
2021-10-18 Steel World Comments Off on Measures to be taken to improve the purity of steel
The purity of molten steel mainly refers to the gas content and the number, shape and distribution of inclusions in the steel. Only pure molten steel has good castability, can guarantee the quality of...
2021-10-18 Steel World Comments Off on Rebar production process and application fields
First, the production process of steel rebar steel surface is ribbed, also called ribbed steel bar, usually with two longitudinal ribs and transverse ribs uniformly distributed along the longitudina...
2021-10-18 Steel World Comments Off on What is DF2 steel? What are the applications of DF2 steel?
(%): Carbon chromium molybdenum manganese nickel tungsten vanadium silicon aluminum C Cr Mn Ni WV Al0.95 0.6 1.2 0.6 0.11 4. After hardening and tempering, the high surface hardness and the good match...
2021-10-18 Steel World Comments Off on Application of air source heat pump chiller and hot water unit
1. Overview According to the “Technical Language Standards for Heating, Ventilation and Air Conditioning” (GB50155-92), a heat pump is defined as a refrigerator that can convert the func...
2021-10-18 Steel World Comments Off on Subcutaneous bubbles of continuous casting billet
Below the surface of the cast slab, there are large bubbles growing toward the columnar crystals with a diameter and a length of 1 mm and 10 mm or more. These bubbles are called surface bubbles that a...
2021-10-18 Steel World Comments Off on What is 304 stainless steel
A universal stainless steel, it is widely used to make equipment and parts that require good comprehensive performance (corrosion resistance and formability). It can withstand general rust in the buil...
2021-10-18 Steel World Comments Off on What is the market price of steel? What are the scope of application of steel market prices?
This APP is a mobile client developed by the customer. Contains related knowledge such as industry news and industry knowledge, as well as a complete enterprise membership and product platform, as wel...
2021-10-18 Steel World Comments Off on Application of New Technology of Foreign Permanent Magnet Transmission in Magnetic Pump
Process principle: Inside the rotating drum containing the plated parts, glass balls, zinc powder, water and accelerator, the glass balls as the impact medium rotate with the drum, friction and hammer...
2021-10-18 Steel World Comments Off on Application of New Technology of Foreign Permanent Magnet Transmission in Magnetic Pump
The latest development of foreign permanent magnet transmission technology is reviewed. The application field is broadened and the technical performance is improved; some new technologies, new process...
2021-10-18 Steel World Comments Off on How did “iron” transform into “steel”?
Steelmaking begins with ironmaking. Steel comes from pig iron. Pig iron smelted from iron ore has a high carbon content and contains many impurities (such as silicon, manganese, phosphorus, sulfur, et...
2021-10-18 Steel World Comments Off on Features of roll cross wedge rolling mill
The roll cross wedge rolling mill is the most widely used of the three types of rolling mills: its main advantages are as follows: (1) High productivity, generally 6~25 (pairs)/min. (2) Equipped with ...
2021-10-18 Steel World Comments Off on What is DHA1 steel? What are the applications of DHA1 steel?
It has been pre-hardened to 37～41HRC (surface hardness) without heat treatment. Suitable for molds and parts with complex shapes and precision. Excellent cutting performance, easy to process and engra...
2021-10-18 Steel World Comments Off on Digital Control Amplifier of Electro-hydraulic Specific Gravity Directional Throttle Valve
Introduction The electro-hydraulic proportional directional throttle valve is composed of a valve body (mechanical structure) and a proportional control amplifier. There is no proportional control a...
2021-10-18 Steel World Comments Off on How to summarize the specifications of the pressure reducing valve
standard encdoing Standard Chinese name Standard English name JB/T10367-2002 Hydraulic pressure reducing valve GB/T12245-1989 Performance test method of pressure reducing valve Methods of performance ...
2021-10-18 Steel World Comments Off on Rolling unit pressure
Rolling unit pressure (specific roll pressure) The rolling force on the unit contact area of the rolled piece and the roll during rolling. Along the entire roll contact area with the rolling piece, th...
