Dongguan Hongyuan Mold Steel Products Co

【Hongyuan】【Hongyuan】Steel
【Hongyuan】Mold steel
【Hongyuan】Sweden wins 100
【Hongyuan】Pre-hardened material
【Hongyuan】 Clinker
【Hongyuan】Price
【Hongyuan】Heat treatment material
【Hongyuan】Hard material
【Hongyuan】Steel plate
【Hongyuan】Round bar
Steel is carbon-molybdenum solid steel. Its carbon content is much lower than steel, and molybdenum and vanadium elements are added, which significantly improves the hot working performance, impact toughness and carbide distribution of the steel.
Basic information Alloy tool steel:
Standard: B/
Availability status The varieties available include hot-rolled materials, forged materials, cold-drawn materials, hot-rolled steel plates and cold-drawn steel wires
Degraded, hardness ~B, indentation diameter 3.~.
The characteristic steel of the material is carbon-molybdenum solid steel. Its carbon content is much lower than that of steel, and molybdenum and vanadium elements are added, which significantly improves the hot working performance, impact toughness and carbide distribution of the steel. The steel has good wear resistance, hardenability, hardenability, toughness, thermal stability, compressive strength, micro-deformation, excellent overall performance and wide adaptability. The thermal softening temperature is ℃. The cutter can be completely quenched at the following temperature. The wear resistance of this steel is 3~ times lower than that of tool steel, and the quenching volume will deform. Quenching depth: oil quenching ~3.
During the crystallization process, eutectic network carbides are formed (the carbonized material fraction is about 0.0, and the eutectic temperature is about 0.0). These carbides are very hard and brittle. Although the carbides are broken to a certain extent after billet rolling, the carbides are distributed in strips, shapes, blocks, and piles along the rolling direction. The degree of segregation increases with the diameter of the steel []
Scope of application Mold steel has relatively high hardenability, quenching and tempering hardness, wear resistance, and strength. Used to manufacture various cold stamping dies and tools with large cross-sections, complex shapes and heavy working conditions, such as punching dies, trimming dies, rolling dies, thick steel plate deep drawing dies, circular saws, standard tools and Gauges, thread rolling dies, etc.
Chemical composition Carbon:.~
Silicon:
Manganese
Sulfur:
Phosphorus:
Chromium:.~
Nickel allowable residual content
br/> Copper: Allowable residual content
Vanadium: .~
Molybdenum: .~
Hardness annealing, ~B, indentation diameter 3.~.Quenching,
Application mold steel Hardenability: The hardness, strength, and toughness ratio after quenching and tempering are high. Works with a diameter of 3~ or less can be completely hardenable. The quenching deformation is small, but the high-temperature plasticity is poor. It is mostly used to manufacture composite molds and tools with large cross-sections, complex shapes, and heavy workloads.
Processing technology specifications, cold extrusion blank softening specifications
Make the iron filings protected by heating, temperature ~, time furnace cooling, hardness B, cold extrusion forming can be successfully achieved
Ordinary isothermal spheroidization Specification
~℃3~ Isothermal as the furnace is cooled to ~℃~, air cooling hardness B out of the furnace, eutectic carbide grade 3
Optimal isothermal temperature~, time~
Specification for spheroidization degeneration
~Cool in the furnace at a cooling rate of 3, then slowly cool in the furnace to ~, then come out of the furnace and air-cool. Hardness ~B.
Ordinary quenching and recovery specifications
Quenching temperature ~, oil quenching or quenching, hardness recovery temperature ~, recovery time or recovery temperature 3 ~ 3, recovery ~ 3 times
Heat treatment) low quenching, low recovery : Quenching temperature is ℃ ~ ℃, tempering temperature is about ℃, secondary tempering
) High quenching and high tempering: Quenching temperature is ~ ℃, tempering temperature is about ℃, secondary tempering
High quenching High-end uses a secondary hardening method to increase the hardness, but the grains will grow.
Cryogenically treated steel undergoes cryogenic treatment. The cryogenic treatment can cause the quenched martensite to precipitate highly dispersed ultrafine carbides. After subsequent low-temperature tempering at ℃, these ultrafine carbides can be transformed into carbides. Martensite without cryogenic treatment will only precipitate a small amount of carbides in certain local areas after low-temperature annealing. Using low-temperature chemical heat treatment method, on the basis of maintaining high hardness and high wear resistance of steel, ion nitriding, gas nitrocarburizing, and salt bath thiocyanate co-infiltration are used to improve the adhesion resistance of the infiltration layer. The three low-temperature chemical heat treatment infiltration layers all have significant impact resistance and adhesion effects, among which the salt bath thiocyanate co-infiltration is the best. After gas nitrocarburizing treatment, the service life of the drawing mold for steel stainless steel utensils reaches more than 30,000 pieces, which is more than twice as long as that of similar molds treated with conventional quenching and tempering.
Hardening treatment In order to increase the life of the mold to more than 10,000 mold times, the hardening method of quenching and low-temperature tempering can be implemented on the pre-hardened steel. When quenching, first preheat at -℃ for -hour, then keep it at -℃ for a certain period of time (at least hours), put it in oil and cool it to -℃. The oil will be air-cooled. After quenching, the hardness can reach up to 0℃. In order to prevent cracking, it should be carried out immediately at low temperature. Fire treatment, after tempering, the hardness can be maintained above tempering
Plan
Quenching temperature ℃
Application
Heating temperature/℃
Medium
Hardness
Ⅰ
Ⅱ
Ⅲ
~
Eliminate stress
Remove stress and reduce hardness
Remove stress and reduce hardness
~
~
~
Oil or nitrate
~
~
~
ⅣⅤ
Ⅵ
~
Remove Stress and formation of secondary hardening
Removal of stress and formation of secondary hardening
~℃ multiple tempering

~
~
~
< br/> Quenching plan
First preheating/℃
Second preheating/℃
Quenching temperature/℃
Cooling
Hardness
( )



Medium
Medium temperature/°C
Cooling in medium
Subsequently





Ⅰ
Ⅱ
Ⅲ
Ⅳ
V
~
~
~< br/> ~
~
~
~
Oil
Oil
Molten nitrate
Oil
Molten nitrate
~
~
~
~
~
To room temperature
To oil temperature
~
To oil temperature
/> ~
Air cooling
Air cooling
Air cooling
Air cooling
Air cooling
~
~
~
~
~

Note: Plans II and III are used for workpieces that require high mechanical properties and small deformation, such as threaded rollers, thread rolling plates, and molds with complex shapes that are subject to impact loads. etc. Plans IV and V are used for workpieces that require red hardness and wear resistance, but have poor mechanical properties and large dimensional deformation, such as hot stamping dies that work below ℃. 3. This kind of steel is very sensitive to decarburization. The salt bath used for heat and heating must be fully deoxidized before use. If heating in an ordinary electric furnace, the workpiece can be put into a box and filled with carburizing agent or pig iron powder (at this time, the workpiece may have a slight carburization phenomenon, and the hardness may be Improve~). Table - Microstructure ratio in quenched state
Quenching scheme
Cooling
Carbide/
Martensite/
Austenite/
Ⅰ, Ⅱ
Oil, nitrate

~
~

Corresponding brand national standard:
Taiwan standard:
German standard:
Japanese Standard:
Korean Standard:
Italian Standard:
Swedish Standard:
Spanish Standard:
American Standard:
Typical application examples) This steel can be used Make punching molds with a material thickness of 3 to produce complex shapes of convex molds, concave molds, and inserts. The recommended hardness is ~ when making convex molds, and the recommended hardness is ~ when making concave molds.
) is used to make punches and dies that require wear resistance in punching dies. When making punch molds, the recommended hardness is guanidine~, and when making concave molds, the recommended hardness is ~.
3) Used to make punches, concave dies and inserts in bending dies that require wear resistance and complex shapes. The recommended hardness is ~
). It is recommended to have a hardness of ~ when making a punch, and a hardness of ~ is recommended when making a concave mold.
) is used to make punches and concave dies for cold extrusion molding of aluminum parts. The recommended hardness is ~ when making punch molds, and the recommended hardness is when making concave molds.
) For the punch and concave dies used to make cold extrusion dies for copper parts, it is recommended to use a hardness of ~.
) The punch and concave dies used in cold extrusion dies for steel parts are recommended to have a hardness of ~.
) Used to form spring steel plates with a mass fraction of carbon of . , the hardness is 3~, and with additional nitriding treatment, the service life can reach 10,000 times.
) This steel is used for thread rolling dies. If it is formed by simple forging, the carbide unevenness will be ~ level, the service life of the thread rolling dies will be very short, and teeth will easily fall out. However, when the multi-directional repeated forging process is used to reduce the carbide unevenness to no less than 100%, the service life of the wire plate will be increased from the previous thousands to 10,000 pieces, or even as high as 10,000 pieces. This steel can be used in thread rolling dies for processing steel parts.