VolPort, the leading enterprise of Chinese crushing and grinding industries, has always been dedicated to the development of ore crushers, sand-making machines and industrial grinders in the past 30 years.
Hardness; Cold Rolling Mill: Intermediate Roll: 9Cr2M, MC3, MC5: 70 ~ 85 HSD: Work Roll: 9Cr2MoR, 86CrMoV7, MC3, MC5: 80 ~ 105 HSC: Back-Up Roll: 60Cr3Mo, 9Cr2Mo, 86CrMoV7, 70Cr3NiMo ... price and service to the steel industry for more than 30 years. We are a leading distributor of mill rolls to the north American steel mill industry, with ...
The roll hardness value depends on the actual production conditions of the mill. If the burning crack resistance is mainly considered, the softer roller can be selected, while the harder roll should be given priority to the wear resistance, which can be used in the traditional frame and cantilever frame.
The WHEMCO companies in Pennsylvania and Ohio, USA manufacture a full range of mill rolls – spun cast iron, cast steel and forged steel. ... Director of International Forged Roll Sales Lehigh Heavy Forge +1.610.322.8116 …
Steel mill roll and have a larger impact force load, should have sufficient strength and hardness of the roll surface can be placed on second.Roughing mill roll should be chosen by special soft annealed pearlite ductile iron rolls, the hardness should be …
Patented Technologies in Roll Forming. We own patented technologies in the rolls manufacturing industry. In high frequency heat treatment roll (⌀500 – ⌀1,500), wherein cylindrical rolls of S45C JIS (Hs 70 ±2) Carbon Alloy Steel …
The influence of hardness of the material of the roll on the wear resistance is only marginal. The contents of C and alloying elements and the microstructures are more important parameters for wear resistance. Frictional force – In the rolling mill, the roll and the material being rolled are both pressed together by the same load. Hence for ...
Shanghai Tangshan Heavy Machinery International Co., Ltd. Address: Room 368, Part 302, No. 211, North Fute Road, Pilot Free Trade Zone, Shanghai, China
Reversing Mill Work Roll Skinpass Mill Work Roll : Deep Hardness Penetration : Special Function. Symbol Material Substance Main Usage Characteristics FH-15K : 5%Cr Steel : Tandem Mill Work Roll : Deep Hardness Less Roll Marks : FH-15R : …
Rolling Mill Rolls. 1. Definitions. Rolls are a tool to produce plastic deformation of the metal. It is an important consuming part to determine the efficiency and quality of the rolling mill. Roll is an important part of the rolling mill. The pressure generated by a pair or group of rolls is used to roll the steel.
This is a mill fault. Roll fatigue. Rolls are also damaged because of fatigue. The damage due to fatigue can start at the surface or the sub-surface. The problem of fatigue in the rolls can arise due to high loads in the mills. …
1. Two High Rolling Mills. It contains two heavy rolls fixed one over the other. The rolls are supported in bearing housed in sturdy upright frames (called stands) which are grouted to the rolling mill floor. The vertical gap …
Hard rolls (with hardness of НВ 420-600) are used in finishing and roughing stands of wire and small section mills. They are made of chilled cast iron and can be one- or two-layer. Superhard rolls (with Shore hardness of over 100) are made of …
The mill roller is mainly composed of a roll body, a roll neck and a shaft head. The roll body is the middle part of the roll, which actually participates in the rolling of the metal with a smooth cylindrical or grooved surface. There are steel rolls, cast iron rolls, alloy rolls, ceramic rolls, etc, according to the roll material. Depending on ...
WORLD CLASS ROLLS OF THE HIGHEST QUALITY FOR OVER 100 YEARS. The WHEMCO companies in Pennsylvania and Ohio, USA manufacture a full range of mill rolls – spun cast iron, cast steel and forged steel. We …
For the hardness testing of high-hardness forged steel cold rolling mill rolls, HV, Leeb and Shore hardness always been used internationally. Due to some characteristics of the forged steel roll, such as microstructure, depth of quenching hardness, residual surface stress value and type of roll hardness testing instrument, the hardness test ...
In fact, the hardness drop zone from the surface to the core of the roll is gradual up to 10 to 15mm depth compared to chill roll where the hardness drop is sharp. Therefore, indefinite chill rolls are used in the intermediate and finishing stands of Section Mills where deep grooves may have to be cut to make the required profiles for the ...
Roll body hardness HS. Roll neck tensile strength/MPa. ... 500～1000. 300～700. 500～900 Large and medium-sized steel blank and rough rolling stand, rough rolling stand of …
Mill rolls,Mill rings Mill rolls for hot strip mill General description： The recommended material and hardness are shown as below, the actual material and hardness used will depend on the actual requirement of the user.
Paper roll hardness is dependent on paper characteristics and the tension distribution throughout the wound roll. The winder is able to control tension distribution in the roll via the TNT's of winding, i.e. Tension, Nip load and Torque. Figure 1 The TNT's of winding. Paper roll hardness can be determined by measuring the density distribution ...
The material of cold roll is 9Cr2Mo. The surface hardness of HS96 is obtained by surface quenching and tempering. The surface of the roll is very hard and brittle. At the same time, it has poor thermal stability and high cracking …
Reversing Mill Work Roll Skinpass Mill Work Roll : Deep Hardness Penetration : Special Function. Symbol Material Substance Main Usage Characteristics FH-15K : 5%Cr Steel : ... CGL Skinpass Mill Work Roll : Spalling Resistance under CGL Condition : SFH-20 : Special Material : Tandem Mill First Stand Roll Dull Finish Skinpass Roll :
These rolls are usually heat treated, the hardness range is 35 -55 deg Shore and they are commonly used as back-up rolls in 4-high rolling mills. An alloy steel containing tungsten (W) and with a hardness of 40 – 50 deg Shore …
The rolls of rolling mill may break in practical application. According to the analysis of fracture phenomena, the main part of fracture is mainly concentrated in the roll ring, and the fracture section is irregularly inclined or a …
Composition: roll body, roll neck and shaft head; Application: rolling mill; Hardness：HSD58-80; Size:φ280-800; Maximum machining length：6000mm; Product description: The roller is an important part of bai steel mill rolling machine. It USES the pressure generated by a pair of Du or a group of rollers to roll the steel.
Xingtai Zhengkun Machinery & Roll Co., Ltd. is a professional supplier of foundry rolls. We have abilities to supply series of high quality mill rolls and sleeves for wire & bar mill, section mill, plate mill, hot strip mill, cold strip mill, pipe & tube mill etc.
These mill rolls are manufactured in dimensions of up to Ø630mm outside diameter and a maximum thickness of 400mm. Composite Rolls With Easy-To-Use Clamping System Kennametal composite mill roll assemblies are designed for use in the high torque, low speed (<10m/sec), intermediate stands of wire rod mills where traditional cast iron or PM ...
High Hardness forged back up roll for rolling mill. The modern forging roll joint unit has really realized high-speed and continuThe productivity of roll has increase greatly The cold-olled products has devehigh-precision, high-quality …
