35CRMo Precision Bright Tube
It is used to manufacture important parts in various machines that bear impact, bending and torsion, and high loads, such as rolling mill herringbone gears, crankshafts, hammer rods, connecting rods, fasteners, steam turbine engine main shafts, axles, engine transmission parts, Large motor shafts, perforators in petroleum machinery, bolts for boilers with operating temperature below 400 degrees Celsius, nuts below 510 degrees Celsius, seamless thick-walled pipes for high pressure in chemical machinery (temperature 450 to 500 degrees Celsius, no corrosive media ), etc.; it can also be used instead of 40CrNi to manufacture high-load drive shafts, steam turbine engine rotors, large section gears, supporting shafts (diameter less than 500MM), etc.; process equipment materials, pipes, welding materials, etc.
Used as important structural parts that work under high loads, such as transmission parts of vehicles and engines; rotors, main shafts, heavy-duty drive shafts, large-section parts of turbo-generators
35CrMo precision bright tube spot specifications
Product name specification/mm material
Wire alloy steel Ф5.5-3035CrMo
Hot rolled round steel Ф20-10035CrMo
Alloy steel hot rolled sheet 5-10035CrMo
Hot rolled round steel Ф200-40035CrMo
Alloy steel cold rolled steel sheet 0.1-18035CrMo
Cold plate: (length×width)×thickness×0.00785
Hot plate: (length×width)×thickness×0.00785
Welded pipe: (outer diameter-wall thickness) × wall thickness × 0.02466
Flat steel: (length × width) × 0.00785
Yuan Steel: (diameter × diameter) × 0.00617
Square steel: (length × width) × 0.00785
Galvanized pipe: (outer diameter-wall thickness) × wall thickness × 0.02466 × 1.06
Medium and heavy plate: (length×width)×thickness×0.00785
Galvanized sheet: (length×width)×thickness×0.00785×1.06
Seamless tube: (outer diameter-wall thickness) × wall thickness × 0.02466
Open plate: (length×width)×thickness×0.00785
Rebar: (diameter × diameter) × 0.00617
According to the carbon recommended by the International Institute of Welding (IIW) (1) when Ceq 0.60%, the 35CrMo precision bright tube has a strong tendency to harden and poor weldability. It is a difficult-to-weld steel grade and must be welded with higher Preheating temperature and strict process measures, select suitable welding materials. After calculation, the carbon equivalent value of 35CrMo precision bright tube Ceq=0.72%. It can be seen that the weldability of this material is poor, and it has a greater tendency to harden during welding, and the hot and cold cracking tendency of the heat-affected zone will be greater, especially when welding in the quenched and tempered state, the cold cracking tendency of the heat-affected zone will be The performance is very prominent, so on the basis of selecting suitable welding materials and reasonable welding methods, a higher pre-heating temperature before welding, strict process measures and control of appropriate interlayer temperature can be achieved to achieve product welding. Purpose.
