A forging is metal that has been heated in order to soften it then pressed, hammered, or otherwise formed into a shape. All forgings begin as cast starting stock. Forgings benefit from the forming operation which enhances their overall toughness and fatigue resistance.

The production of seamless forged rings is often performed by a process called ring rolling on rolling mills. These mills vary in size to produce forged rings with outside diameters of just a few inches to over 300 inches and in weights from a single pound up to over 300,000 pounds.The ring rolling process starts with a circular preform of metal that has been previously upset and pierced (using th...

Different forging methods have different processes, wherein the hot forging process has the longest process, and the general sequence is: forging blanking; forging billet heating; roll forging stock; die forging; trimming; punching; Intermediate inspection, inspection of the dimensions and surface defects of forgings; forging heat treatment, to eliminate forging stress, improve metal cutting perfo...

CNC press is a kind of electric screw press. It adopts permanent magnet synchronous servo motor drive control. It consists of mechanical parts such as frame, flywheel, screw nut, slider, lubrication mechanism, brake mechanism, servo motor and electric control cabinet. It is composed of an electric part such as an operation button station.The working principle of the numerical control press is that...

Induction heating is mostly used for industrial induction heating: the workpiece is placed in the inductor, and the inductor is usually a hollow copper tube that is input to an intermediate frequency or high frequency alternating current (300-300000 Hz or higher). The alternating magnetic field generates an induced current of the same frequency in the workpiece. The induced current is uneven in th...

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1. With same chemical composition, the average melting temperature of pre-melted refining slag is evidently lower than that of sintered refining slag, normally around 40℃.2. Pre-melted refining slag is with even composition, good fluidity when melted, better metallurgical effect such as deoxidization, desulfurization and impurity absorption than sintered refining slag, faster desulfurization rate ...

Chromium-Molybdenum high tensile steel has good ductility, shock resistance and wear resistance.AISI 4145, AISI 4145H and AISI 4145MOD are the main type of 4145 Cr-Mo steel. AISI 4145 is a chromium molybdenum low alloy steel grade widely used in the oil and gas sectors but with a higher carbon content compared with AISI 4140. Larger diameters AISI 4145 bars are often supplied with higher Molybdenu...

8620 gear steel is a low carbon nickel chromium molybdenum alloy steel. And it is a low cost steel with good carburized properties. The nickel content contributes to case toughness at high strength with above average core toughness. The chromium and molybdenum support the proper formation of carbides resulting in good surface hardness and wear. It is used to make a wide range of gears, crankshafts...

Plain bearing consisting of a shaft rotating in a hole. There are several specific styles: bushing, journal bearing, sleeve bearing, rifle bearing,...

A bearing is a machine element that constrains relative motion to only the desired motion, and reduces friction between moving parts. The design of the bearing may, for e...

It is a stainless steel that accounts for about half of the austenite and ferrite structures. In the case of a lower C content, the Cr content is between 18% and 28%, and the Ni content is between 3% and 10%. Some steels also contain alloying elements such as Mo, Cu, Si, Nb, Ti, and N. This type of steel combines the characteristics of austenitic and ferritic stainless steel. Compared with ferrite...

Stainless steel mainly composed of ferrite in use. The chromium content is between 11% and 30%, and has a body-centered cubic crystal structure. These steels generally do not contain nickel, and sometimes contain a small amount of elements such as Mo, Ti, Nb, etc. These steels are characterized by large thermal conductivity, small expansion coefficient, good oxidation resistance and excellent resi...

When brown rust spots (dot) appeared on the surface of stainless steel pipes, people were amazed: "Stainless steel is not rusted, rust is not stainless steel, and there may be problems with steel." In fact, this is a one-sided misconception about the lack of understanding of stainless steel. Stainless steel will also rust under certain conditions. Stainless steel has the ability to resist atmosphe...

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Yes,we welcome the third party inspection party to test.SGS,TUV,AsiaInspection and so on.

The materials with ESR are of higher purity,less sulfur,less nonmetallic inclusion,uniformer microstructure and chemical compositions.

1.Yield point When the steel or sample is stretched, when the stress exceeds the elastic limit, even if the stress does not increase any more, the steel or the sample continues to undergo significant plastic deformation, which is called the yield, and the minimum stress value when the yield phenomenon occurs is To yield points. Let Ps be the external force at the yield point s, and Fo be the sampl...

In addition to iron and carbon, the main elements of steel include silicon, manganese, sulfur, and phosphorus.There are various classification methods for steel, and the main methods are as follows:1. Classified by quality(1) Ordinary steel (P ≤ 0.045%, S ≤ 0.050%)(2) high quality steel (P, S are ≤ 0.035%)(3) High-quality steel (P≤0.035%, S≤0.030%)2, classified by chemical composition(1) Carbon st...

CNC machining center is a full-function CNC machine tool. It concentrates functions such as milling, boring, drilling, tapping and thread cutting on one device, giving it a variety of technological means.The CNC machining center is provided with a magazine, and different numbers of various tools or inspection tools are stored in the magazine, which are automatically selected and replaced by the pr...

Grinding refers to the method of machining excess material on the workpiece with abrasives and abrasive tools. Grinding is one of the most widely used cutting methods.Grinding is the use of high-speed rotating grinding wheels and other tools to machine the workpiece surface. Grinding inner and outer cylindrical surfaces, conical surfaces and planes used to machine a variety of workpieces, as well ...

Sandblasting is the operation of forcibly propelling a stream of abrasive material against a surface under high pressure to smooth a rough surface, roughen a smooth surface, shape a surface or remove surface contaminants.

ESR:Electroslag RemeltingVAD:Vacuum Arc DegassingVIM:Vacuum Induction FurnaceVAR: Vacuum Arc Remelting

EF:Medium Frequency FurnaceEAF:Electric Arc FurnaceBOF:Basic Oxygen FurnaceLF:Ladle RefiningVD:Vacuum Degassing

Resolution, dynamic range, horizontal linearity, vertical linearity, sensitivity, signal to noise ratio.

(1) When the ultrasonic wave propagates in the medium, it has the characteristic of reflection at different quality interfaces. If the defect is encountered and the size of the defect is equal to or greater than the ultrasonic wavelength, the ultrasonic wave is reflected back on the defect, and the flaw detector can display the reflected wave. Come out; if the size of the defect is even smaller th...

According to a survey conducted by the National Aeronautics and Space Administration, many non-destructive testing methods are considered to be divided into six categories and about 70 kinds. However, the following are common in practical applications:Conventional non-destructive testing methods are:　　－ Ultrasonic Testing（ UT）；　　－Radiographic Testing（RT）；　　－Magnetic particle Testing（MT）；　　－Penetra...

(1) Non-destructive testing is a test method for inspecting the surface and internal quality of the parts to be inspected without damaging the working state of the workpiece or raw materials.(2) NondestructiveTesting: abbreviated NDT

(1) Non-destructive testing is a test method for inspecting the surface and internal quality of the parts to be inspected without damaging the working state of the workpiece or raw materials.(2) NondestructiveTesting: abbreviated NDT

API: It is the abbreviation of English American Petroleum Institute, Chinese means American Petroleum Institute.OCTG: It is the abbreviation of English Oil Country Tubular Goods. Chinese means oil special tubing, including product oil casing, drill pipe, drill collar, coupling, short circuit and so on.Tubing: A tubing used in oil wells for oil recovery, gas production, water injection, and acid fr...

Brief description: Super stainless steel is a special kind of stainless steel. It is different from common stainless steel 304 in terms of chemical composition. It refers to a high-alloy stainless steel containing high nickel, high chromium, and high molybdenum. Secondly, in terms of high temperature resistance or corrosion resistance, compared with 304, it has more excellent high temperature or ...

H13 die steel is one of the most widely used hot die steels at home and abroad.The commonly used smelting methods for domestic H13 steel include electric furnace smelting + electroslag remelting and electric furnace smelting + vacuum refining outside the furnace. Electroslag smelting plays an important role in controlling the cleanliness and homogeneity of H13 steel and is an important step in the...

High Carbon Spring Steel Strips are mainy used for Roller shutter,Clockwork spring.

Stainless Steel Spring Wires are mainly used for Torsion springs,Taper spring, Circlip,Deformed spring,Battery spring

High Carbon Steel Spring Wires are mainly usded for the manufacture of mechanical springs for static duty and dynamic duty.

Bubbles are divided into two kinds: inner bubbles and subcutaneous bubbles:The gas in the steel is fed from the charge, furnace gas, and air. When the deoxidation is poor during smelting and the boiling exhaust is insufficient, the gas content in the molten steel is excessive. During the solidification process, the gas solubility decreases with the decrease in the temperature of molten steel. Prec...

Powder forging is a forging forming method that combines powder metallurgy forming with plastic forming. The process is based on metal powder as raw material, preformed by pressing, and sintered to obtain a blank shape suitable for die forging. After the blank is heated to the forging temperature, it is placed in a forge mold for closed die forging or squeezing. , After further processing, to obt...

Austenite stainless steel forgings have no allotropic crystal transformation during heating, and the heating temperature is too high for the grains to grow; in addition, the α phase in the duplex stainless steel increases. After the heating temperature exceeds 1200°C, the number increases rapidly. Therefore, the initial forging temperature of austenitic stainless steel forgings should not exceed 1...

D2 steel has high wear-resistant, micro-deformation cold work tool steel, wind hard tool steel, carbon content up to 1.5%, chromium content up to 11.5%, after heat treatment hardness up to 60HRC. D2 steel, such as silicon steel die, cold cutting scissors, trimming die and so on.chemical compositionCarbon C: 1.40 to 1.6Silicon Si: ≤ 0.60Manganese Mn: ≤ 0.60Sulfur S: ≤0.030Phosphorus P: ≤ 0.030Chrom...

The shape of the die forging is an important basis for formulating a die forging process. Forgings with similar shapes, the die forging process and the die structure used are basically the same. Therefore, the various types of die forgings are classified to facilitate the design of forgings and dies. Commonly used classification methods are divided according to the shape of the forging and the dir...