Experimental studies have shown that the resistance to melting loss of the slag splash layer is related to the TFe content in the slag splash layer. The higher the TFe content, the easier the slag spl...
9Cr18MoV steel has good rust resistance. It is a high-quality stainless steel currently used in the high-end batch tool market. Its strength and sharpness are better than ATS-34, and its chromium cont...
Patent No.: 98125048.3 Patentee: Baoshan Iron and Steel (Group) Company Technical Abstract: The present invention discloses a molten steel refining process, which belongs to the treatment method of mo...
4 F, m& ?: `2 ]$ `& F| Blue Pump Technology Forum With the development of the chemical industry and the improvement of people’s awareness of the environment and safety, the requirements for ch...
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...
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...
●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....
1 Scope This standard specifies the terminology, design and performance requirements, testing, displacement determination, equivalent displacement calculation, marking and lead sealing, quality assura...
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...
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...
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...
(%): 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...
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...
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...
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...
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 ...
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...
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...
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...
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...
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...
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...
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...
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...
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 ...
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...
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...
(%): 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...
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...
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...
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...
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...
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...
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...
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...
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 ...