Machining Commonly Used 24 Kinds of Materials

Can be used for CNC machining, mold processing of more than a hundred kinds of materials, metal, plastic, but according to the actual needs of different, each material use as well as the demand varies, the most commonly used 24 kinds of materials.

1, 45 steel - high-quality carbon structural steel, is the most commonly used medium-carbon tempered steel.

Main features: the most commonly used medium-carbon tempered steel, good overall mechanical properties, low hardenability, water quenching cracks easily. Small parts should be tempered, large parts should be normalized. Application examples: mainly used in the manufacture of high strength moving parts, such as turbine impeller, compressor piston. Shafts, gears, racks, worms, etc.. Welded parts pay attention to preheat before welding, stress relief annealing after welding.

2, Q235A (A3 steel) - the most commonly used carbon structural steel

Main features: high plasticity, toughness and welding properties, cold stamping properties, and a certain degree of strength, good cold bending properties. Application examples: widely used in general requirements of the parts and welded structures. Such as the force is not big tie rod, connecting rod, pin, shaft, screws, nuts, rings, brackets, seats, building structures, bridges and so on.

3, 40Cr - one of the most widely used steel, is an alloy structural steel

Main features: tempered, with good overall mechanical properties, low-temperature impact toughness and low notch sensitivity, good hardenability, oil-cooled to get high fatigue strength, water-cooled parts of complex shapes are prone to cracking, cold bending plasticity is medium, tempered or tempered cutting and machining is good, but welding is not good, prone to cracking, weld should be preheated before welding to 100 ~ 150 ° C, generally in the tempered state Used in a general state of tempering, but also can be carbonitriding and high-frequency surface quenching treatment.

Application examples: tempering treatment for the manufacture of medium-speed, medium-load parts, such as machine tools, gears, shafts, worm gears, spline shafts, thimble bushing, etc., tempering and high-frequency surface quenching for the manufacture of high surface hardness, wear-resistant parts, such as gears, shafts, shafts, crankshafts, arbors, sleeves, pins, connecting rods, bolts and nuts, intake valves, etc., quenched and tempered at medium temperatures for the manufacture of heavy-duty, medium-speed parts, such as pumps, rotors, sliders, gears, pumps, pumps, pumps and other parts. Rotor, slider, gears, spindles, rings, etc., after quenching and low-temperature tempering for the manufacture of heavy-duty, low-impact, wear-resistant parts, such as worm gears, spindles, shafts, rings, etc., carbonitriding that is, after the manufacture of larger sizes, low-temperature impact of the toughness of the transmission parts, such as shafts, gears and so on.

4, HT150 - gray cast iron

Application examples: gear box body, machine tool bed, box, hydraulic cylinder, pump body, valve body, flywheel, cylinder head, pulley, bearing cover.

5, 35 - a variety of standard parts, fasteners commonly used materials

Main characteristics: appropriate strength, good plasticity, high cold plasticity, weldability is still good. Cold state can be localized upsetting and drawing. Low hardenability, normalized or tempered after the use of application examples: suitable for the manufacture of small cross-section parts, parts that can withstand larger loads: such as crankshafts, levers, connecting rods, hooks and rings, etc., a variety of standard parts, fasteners.

6, 65Mn - commonly used spring steel

Application examples: small sizes of various flat, round springs, cushion springs, spring windings, can also be made of spring rings, valve springs, clutch springs, brake springs, cold rolled coil springs, card springs and so on.

7, 0Cr18Ni9 - the most commonly used stainless steel (U.S. steel number 304, Japanese steel number SUS304)

Characteristics and applications: as a stainless steel heat-resistant steel used most widely, such as food equipment, general chemical equipment, the original in the energy industry equipment.

8, Cr12 - commonly used cold work mold steel (U.S. steel number D3, Japanese steel number SKD1)

Characteristics and applications: Cr12 steel is a widely used cold work die steel, is a high-carbon, high-chromium type of Leistungen steel. The steel has good hardenability and good wear resistance; Cr12 steel carbon content of up to 2.3%, so the impact toughness is poor, easy to brittle cracking, and easy to form uneven eutectic carbides; Cr12 steel because of good wear resistance, more used in the manufacture of impact loads by the small requirement of high wear-resistant cold punching dies, punches, under the material mold, cold upsetting molds, cold extrusion mold punches and concave molds, drilling bushings, gauge, wire drawing dies, embossing molds, and the use of the steel in the manufacture of cold working dies. DC53 is also used in cold drawing dies, wire drawing dies, embossing dies, thread rolling plates, deep drawing dies and cold pressing dies for powder metallurgy.

9, DC53 - commonly used Japanese imports of cold work die steel

Characteristics and applications: high strength and toughness cold working die steel, Japan Daido special steel (Zhu) manufacturers of steel. After high temperature tempering with high hardness, high toughness, good line cutting. Used for precision cold stamping die, drawing die, thread rolling die, cold blanking die, punch, etc. 10, SM45 - ordinary carbon plastic mold steel (Japanese steel number S45C).

10, DCCr12MoV - wear-resistant chrome steel

Produced in China, the Cr12 steel with low carbon content, and the addition of Mo and V, carbide inhomogeneity has been improved, MO can reduce carbide segregation and improve hardenability, V can refine the grain to increase toughness. This steel has high hardenability, cross-section in 400mm can be completely quenched, in 300 ~ 400 ℃ can still maintain good hardness and wear resistance, Cr12 has a high toughness, quenching volume change is small, but also has a high wear resistance and good overall mechanical properties. So you can make a large cross-section, complex shape, withstand the impact of a variety of molds, such as ordinary tensile mold, punching concave die, punching mold, drop mold, cutting edge mold, edge mold, wire drawing die, cold extrusion mold, cold cutting scissors, circular saws, standard tools, gauges and so on.

11, SKD11 - toughness of chromium steel

Japan Hitachi Ltd. production. Technically improve the steel casting organization, grain refinement. Cr12mov toughness and wear resistance has improved. Extends the service life of the mold.

12, D2 - high-carbon, high-chromium cold work steel

United States production. With high hardenability, hardenability, wear resistance, high-temperature oxidation resistance, good quenching and polishing corrosion resistance, heat treatment deformation is small, suitable for the manufacture of a variety of requirements for high-precision, long-life cold work molds, cutting tools and gauges, such as tensile molds, cold extrusion molds, cold shear knives and so on.

13, SKD11 (SLD) - non-deformation toughness of high chromium steel

Japan Hitachi Ltd. production. As the steel MO, V content increases, improve the steel casting organization, refine the grain, improve the carbide morphology, and therefore the toughness of this steel (bending strength, deflection, impact toughness, etc.) than SKD1, D2 high, wear resistance has increased, but also has a higher tempering resistance. Practice has proved that this steel mold life than Cr12mov has improved. Often manufacture demanding molds, such as tensile mold, impact grinding wheel mold.

14, DC53 - high toughness high chromium steel

Japan Tatung Co. Heat treatment hardness is higher than SKD11. high temperature (520-530) tempered up to 62-63HRC high hardness, in terms of strength and abrasion resistance DC53 more than SKD11. toughness is twice as much as SKD11. DC53 toughness in the manufacture of cold work molds rarely cracked and cracked. Greatly improve the service life. Residual stress is small. High-temperature turn back to reduce residual stress. Cracks and deformation are suppressed after wire-cutting. Cutting and grinding more than SKD11. Used for precision stamping die, cold forging, deep drawing die.

15, SKH-9 - wear resistance, toughness of the general high-speed steel

Japan Hitachi Ltd. production. Used for cold forging mold, cutting machine, drill, reamer, punch, etc..

16,ASP-23---Powder metallurgy high-speed steel

Swedish production. Carbide distribution is very uniform, wear-resistant, high toughness, easy processing, heat treatment size stability. Used for punches, deep drawing molds, drilling molds, milling cutters and shear blades and other types of long-life cutting tools.

17,P20--General requirements of the size of plastic molds

Made in USA. Electro-etching operation. Factory state pre-hardened HB270-300. quenching hardness HRC52.

18,718--High requirements of the size of plastic molds

Made in Sweden. Especially for electro-etching operation. Factory state pre-hardened HB290-330. quenching hardness HRC52.

19,Nak80---high mirror surface, high precision plastic molds

Japan Tatung Co. Factory state pre-hardened HB370-400. quenching hardness HRC52

20,S136--Anti-corrosion and mirror polishing plastic molds

Made in Sweden. Factory state pre-hardened HB <215. Quenching hardness HRC52.

21,H13--Ordinary commonly used die-casting molds

For aluminum, zinc, magnesium and alloy die casting. Hot stamping die, aluminum extrusion die.

22,SKD61--Advanced die-casting molds

Japan Hitachi company, by electric sub-ballast re-solution technology, in service life than H13 has obvious improvement. Hot stamping die, aluminum extrusion die.

23,8407--Advanced die-casting molds

Swedish production. Hot stamping die, aluminum extrusion die.

24,FDAC--added sulfur to strengthen its easy to chip

Factory pre-hardened hardness 338-42HRC, can be directly engraved processing, without quenching, tempering treatment. Used for small batch molds, simple molds, all kinds of resin products, sliding parts, short delivery time mold parts. Zipper mold, eyeglasses frame mold.

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