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What IS Forged Roll
The forged rolls are divided into cast steel rolls, cast iron rolls, forged steel rolls and powder metallurgy roll forging rings. Forged roll refer to roll produced by forging steel ingots, which are completely different in shape from forged rings and forged discs. Forged roll have cylindrical and non-cylindrical shapes. It is also an important part of the rolling mill and has good performance.
This article will introduce in detail the advantages, applications, roll forging process, testing process, supply size and material of forging roll, etc.
Forged Roll Advantages
1. High strength, high toughness, high hardness and high resistance
2. Has excellent mechanical properties
3. The required working load is small, the production efficiency is high, and the material consumption is small
4. Non-corrosive and abrasive
5. Applied to important equipment in various fields, it is an important part of the rolling mill
Forged Roll Applications
Forged roll is often used in metallurgy, energy, mining, agricultural machinery, textiles and sugar factories, etc.
Forged roll is often used in rolling mills. The rolled piece undergoes plastic deformation between the rolls, and the forged roll bear the rolling force and rolling moment generated during rolling. It is also used in the manufacture of various farm implements and implements, auto parts, turbine shafts, conveyor belts, drill bits and pressure vessels, to name a few.
Forged Roll Process
Forged rolls produced by forging have better strength, toughness, surface hardness uniformity and fatigue resistance than cast rolls. Forging is a process of forming metal parts by using rolling equipment. The manufacturing process and forging process of forged rolls are as follows:
1. Preparation of high-quality raw materials
First prepares high-quality forged steel billets smelted from selected materials.
2. Forged roll forging
Its upper and lower molds are processed on the outer circle of a pair of round rollers, and the heated billet is extruded through the rollers to form it.
Roll forging process: The material is placed into a rolling machine, which moves the material through a series of rollers that apply pressure and gradually shape the metal into the desired shape. This may involve repeated passes through the roller, applying progressively more pressure each time. The roll forging process is a high-precision and efficient method of producing high-quality metal parts.
3. Final treatment and finishing of forged roll
Once the part is formed, it may undergo additional handling and finishing. This can include heat treatment, polishing or other surface treatments to improve its mechanical properties and finish.
The main production process of forged roll is: high-quality billet material-forging-heat treatment-rough machining-quenching and tempering-semi-finishing-flaw detection-preheating treatment-dual frequency quenching-cold treatment-low temperature tempering-finishing-hardness, Ultrasonic and metallographic-packaging (different customer requirements, the production process will also vary)
Forged Roll Detection
(1)Ultrasonic testing: to ensure the physical integrity of the forging kun.
(2)Specification inspection: check the size and weight of the forged roll to verify whether it meets the customer’s requirements.
(3)Chemical composition: It is based on the sampling and analysis before the furnace during smelting. If necessary, chemical analysis or spectral analysis can be used to test the chemical composition.
(4)Appearance inspection: check whether the surface of the forged roll is defective
(5)Macrostructure inspection, microstructure inspection, mechanical performance inspection, etc.
(6)Mechanical performance inspection, using various hardness testers to check the hardness of forgings, and using tensile machines and impact machines to check the tensile strength, yield limit impact toughness, and reduction of area of forged roll.
Forged Roll Supply
Forged Roll Material
Medium carbon steel, high carbon steel, alloy steel, high speed steel, etc.
Forged Roll Size Range
Diameters up to 2,500mm
Lengths up to 15,000mm
Forged Roll Weight Range
Up to 110,000 lbs (50 tons)
Whether it is the production process or the testing process of forged roll, our Songjie forging manufacturer will strictly carry out the process to ensure that the final product meets the international standard quality and safety requirements. As a leading forged roll manufacturer and supplier in China, we produce the best forged roll for our customers.