Imported FCD600 wear gray iron rod

High-precision gray cast iron plate imports FCD600 collectively wear resistant ductile iron gray iron rod is mainly composed of iron, carbon and silicon alloy composition. In these alloys, the carbon content exceeds the eutectic temperature can be retained austenite amount in solid solution. Cast iron is mainly composed of iron, carbon and silicon alloy composition in general. In these alloys, the carbon content exceeds the eutectic temperature can be retained austenite amount in solid solution. Carbon content of more than 2% of the iron-carbon alloys. Industrial carbon content of cast iron is generally 2% to 4%. More carbon in cast iron exists in the form of graphite, and sometimes the form of cementite exist. In addition to carbon, the iron also contains 1% to 3% silicon, and manganese, phosphorus, sulfur and other elements. Alloy cast iron also contains nickel, chromium, molybdenum, aluminum, copper, boron, vanadium and other elements. Carbon, silicon is the main element affecting the microstructure and properties of cast iron. Cast iron can be divided into ① gray cast iron. Higher carbon content (2.7% to 4.0%), carbon exists mainly in the form of flake graphite, gray fracture, referred to as gray iron. Low melting point (1145 ~ 1250 ℃), a small amount of shrinkage during solidification, compressive strength and hardness close to the carbon steel, good shock absorption. For the manufacture of machine bed, cylinder, box and other structural parts. ② white cast iron. Carbon, silicon content is low, carbon exists mainly in the form of cementite, the fracture was silver. Solidification shrinkage is large, easy to produce shrinkage cracks. High hardness, brittleness, can not withstand the impact load. More as blanks and production of wear-resistant parts malleable iron. ③ malleable iron. After annealing white cast iron by the gain, the graphite was flocculent distribution group, called ductile iron. Its homogeneous performance, wear resistance, good ductility and toughness. For the manufacture of complex shape to withstand a dynamic load of parts. ④ ductile iron. The gray cast iron ball after treatment to obtain precipitated graphite spherical, called ductile iron. It has high strength, good toughness and ductility than conventional gray cast iron. For the manufacture of internal combustion engines, auto parts and farm machinery. ⑤ compacted graphite iron. The gray cast iron obtained after treatment creep, vermiform graphite precipitation. Mechanical properties of ductile iron similar between gray iron and ductile iron casting performance between. For the manufacture of automotive parts. ⑥ iron alloy. Ordinary cast iron adding an appropriate amount of alloying elements (such as silicon, manganese, phosphorus, nickel, chromium, molybdenum, copper, aluminum, boron, vanadium, tin, etc.) get. Alloying elements iron matrix structure changes, so as to have a corresponding heat, wear and corrosion resistance, low temperature or non-magnetic properties. For the manufacture of mining, chemical machinery and equipment, instruments and other components. Cast classification classification classification Name Description 1. Press the fracture color component (1) of this cast gray iron most or all of the carbon in the form of flake graphite in a free state, the fracture was dark gray, a certain mechanical properties and good to be cutting, widely used in the industry (2) white cast iron white cast iron is no organization or almost complete absence of an iron-carbon alloy graphite, the fracture was bright white, hard and brittle and can not be cutting, rarely directly used in industrial production of mechanical parts. That it has a high surface hardness and wear resistance, also known as chilled cast iron or chilled cast iron (3) Ma Ma cast iron cast iron is between a white cast iron and gray cast iron between the fracture was Ma dotted gray and white, poor performance, and very few applications 2. Chemical composition score (1) refers to an ordinary iron without any alloying elements iron, such as gray cast iron, malleable iron, ductile iron, etc. (2) iron alloy is adding some alloying elements in the ordinary cast iron, a high-iron to improve the performance of some special formulated. Such as various corrosion and heat resistance properties of cast iron 3. special production methods and organizational performance score (1) ordinary gray cast iron See "gray cast iron" (2) bred gray cast iron which is based on the use of " Modification "is made of cast iron, also known as metamorphism. Its strength, ductility and toughness is much better than the general gray cast iron, organizations are more uniform. Mainly used in higher manufacturing mechanical performance requirements, and changes in the larger cross-sectional size of large castings (3) malleable iron malleable cast iron is made by graphitization annealing white cast iron by a certain component, than gray cast iron with high toughness, also known as ductile cast iron. It can not be forged, used to manufacture castings to withstand impact loads (4) ductile iron ball short. It is by adding a certain amount of liquid iron casting went nodulizer and Mexican agents to promote crystallization of spherical graphite obtained. It compared to steel, in addition to ductility, toughness slightly lower, other properties are near, the advantages of both steel and cast iron excellent material, is widely used in mechanical engineering (5) which is a special properties of cast iron have certain characteristics cast iron, depending on the application can be divided into cast iron, heat-resistant cast iron, cast iron corrosion. Most belong to the alloy cast iron, machinery manufacturing in the wider application of cast iron - stress relief annealing heat treatment process 1. Since the wall thickness of the cast is uneven, in heating, cooling and phase change process, will produce the equivalent stress and organizational stress. In addition, after the machining of large parts of its interior is also easy residual stress, all of which stress must be eliminated. Stress relief annealing heating temperature is usually 500 ~ 550 ℃ holding time of 2 ~ 8h, then furnace cooling (gray iron) or air (ductile iron). Using this process can eliminate 90% to 95% within casting stress, but cast iron does not occur. If the temperature exceeds 550 ℃ or the holding time is too long, it will lead to graphite, the casting strength and hardness decreased. 2. Elimination of white high-temperature graphite cast iron castings annealing cooling, surface and thin section was often produce white. White tissue hard and brittle, poor processing performance, easy to peel. It must be annealed (or normalized) method to eliminate white tissue. Annealing process: heating to 550-950 ℃ heat 2 ~ 5 h, followed by furnace cooling to 500-550 ℃ and then cooled baked. During high temperature insulation, high travel and eutectic cementite cementite decomposed into graphite and A, in the subsequent cooling process in nursing and secondary cementite eutectoid cementite decomposition also occurs graphitization. Due to the decomposition of cementite, resulting in decrease in hardness, resulting in improved machinability. N fireball iron normalizing Ductile Iron 3. The purpose is to obtain pearlite matrix structure and grain refinement, uniform structure, in order to improve the mechanical properties of the casting. Sometimes normalizing surface hardening ductile iron also in the organization of preparation, sub-high-temperature normalizing normalizing normalizing and low temperature. High temperature normalizing temperature is generally not more than 950 ~ 980 ℃, low-temperature normalizing generally heated to a temperature range of co-fold 820 ~ 860 ℃. After normalizing the need to carry out four general treatment to eliminate the internal stress generated when normalizing. The ductile iron quenching and tempering in order to improve the mechanical properties of ductile iron, cast generally heated to Afc1 over 30 ~ 50 ℃ (when Afc1 A representative of the formation of the end of the heating temperature), after holding quenched into oil, to be martensite . In order to appropriately reduce the residual stress after quenching, tempering should be carried out after the general quenching and tempering is tempered martensitic as plus plus residual bainite spheroidal graphite. This organizational good wear resistance for applications requiring high wear resistance, high strength parts. Tempering temperature of 350-500 ℃ after tempering is tempered troostite plus spherical graphite, for applications that require abrasion resistance, a certain effect stability and flexibility of thick pieces. Xiangyun company - related personnel are more concentrated in the steel network of excellence. Tempering temperature of 500-60D ℃, tempered tempered sorbite organization for added spheroidal graphite, with a good combination of toughness and strength of 500-60D ℃, after tempering is tempered as a plus spherical graphite Soxhlet with toughness and strength combined with good overall performance, it is widely used in production. 5. Multi-temperature hardening ductile iron ductile iron can be obtained by Austempering high intensity, with both good ductility and toughness. Multi-temperature quenching temperature selection make major consideration of the original organization of all A, no residue F, but also to avoid A grain growth. The heating temperature generally use Afc1 over 30 ~ 50 ℃, isothermal treatment temperature is 0 ~ 350 ℃ in order to guarantee access to lower bainite has comprehensive mechanical properties. Rare earth magnesium aluminum ductile iron Austempering σb = 1200 ~ 1400MPa, αk = 3 ~ 3.6J / cm2, HRC = 47 ~ 51. It should be noted after isothermal quenching plus a tempering process. 6. In order to improve some of the casting surface hardening surface hardness, wear resistance and fatigue strength, surface hardening can be used. Gray iron and ductile iron castings can be carried out surface hardening. Usually high (in) frequency induction heating surface hardening and electrical contact surface hardening. 7. chemical treatment requirements for surface wear or anti-oxidation, corrosion-resistant castings, steel can be used similar chemical heat treatment process, such as a gas soft chloride, ferric chloride, boriding and sulfur treatment. Gray cast iron GB Chinese HT100 HT150 HT200 HT250 HT300 HT350 JIS Japanese FC100 FC150 FC200 FC250 FC300 FC350 KS Korea GC100 GC150 GC200 GC250 GC300 GC350 AWS American NO.20 NO.25 NO.30 NO.35 NO.40 NO.45 NO.50 NO .55 NO.60 UNS US F11401 F11701 F12101 F12801 F13101 F14101 ductile GB Chinese QT400-18 QT400-15 QT450-10 QT500-7 QT600-3 QT700-2 QT800-2 QT900-2 JIS Japanese FCD350-22 FCD400-18 FCD400 -15 FCD450-10 FCD500-7 FCD600-3 FCD700-2 FCD800-2 KS Korea GCD370 GCD400 GCD450 GCD500 GCD600 GCD700 GCD800 AWS America 60-40-18 65-45-12 80-55-06 100-70-03120- 90-02 UNS US F32800 F33100 F33800 F34800 F36200 Features: Complete product specifications, price, packaging intact, copper pure straightness, inventories, provide material proof and SGS report. Specifications can be customized, Xiangyun company welcome your call, we will sincerely for your service.