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Steel warehouse and cutting unit
One of the most important strengths of the Partogastrospahan complex is having an independent steel warehouse and cutting unit
Cutting is the first operational stage of construction and the most important material in tire molding is used in this part
With nearly 20 years of experience and studying the behavior of various materials in the company’s material library, Partogastrospahan Company has achieved extraordinary results, which is the reason for the long life of the molds in our complex
The main steel used in Partogastrospahan Company to make molds is 2312 and mo40 steel
MO40 steel
Chemical composition
This steel has high levels of chromium and molybdenum, which makes it wear resistant and hard
Mechanical properties
After heat treatment, its surface hardness is 53HRC
Also, its strength is from 750 to 1300 MPa, depending on the dimensions of the sample.
Heat treatment
The tensile strength of this steel is increased by quench-temper heat treatment, and its hardness can be increased by Intended use: High-speed
Quenching of this steel is carried out at a temperature of 820-880 degrees Celsius and then it is slowly cooled in oil or in the presence of air flow
۲۳۱۲ steel
۱٫۲۳۱۲ steel is one of the alloy steels, which is known as CMSK steel and 6-8-40CrMnMoS steel among steels. be
Chemical composition of 1.2312 steel
Carbon 0.9 percent
Silicon 0.4 percent
Manganese 0.2-0.4 percent
Chromium 1.9 percent
Molybdenum 0.3 percent
Heat treatment
Steel 2312 is forged at a temperature of 850-1050 and its annealing temperature is about 720-740 degrees Celsius
Mechanical Properties
After heat treatment, its surface hardness is 300HB
Also, its yield tensile strength is 850 MPa
Before ordering a mold, customers receive specialized advice to select the best type of steel, depending on the type of part and the machines available.