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Control the grinding process of roll is the key to the surface quality control of roll. A good grinding process can not only meet the production needs of high-quality products, but also effectively reduce the roll loss and improve the production efficiency of rolling mill unit.There are many kinds of rollers, commonly used roller varieties are cast steel roller, cast iron roller and forging roller three categories. There are also a small number of carbide rolls on the profile mill.
Moresuperhard can provide completed grinding solution for roll industry, including reisn / metal /electroplated diamond & CBN grinding wheel for cylindrical grinding and groove grinding of roll.
Application of roll:
The roll is the tool that produces plastic deformation of metal, and it is an important consuming part that determines the efficiency of rolling mill and the quality of rolling material. Roll is an important part of rolling mill. It uses a pair or a group of rollers to roll and roll the steel. It mainly bears the influence of dynamic and static load, wear and temperature change during rolling.
Grinding machine:
Moresuperhard diamond grinding wheel for roll can match various brand roll ring cylindrical grinding machine and cylindrical grinder, such as DKD,Herkules, Valmetetc,Wendt,etc.
Roll grinding wheel
Diamond & CBN grinding wheel for roller process
* Diamond Grinding Wheel used for WC hard alloy roll ring process.
* CBN Grinding Wheel used for HSS Roller process.
* Hole-shape Grinding Wheel: for roll ring notch and finishing.
* Ex-circle grinding Wheel: for ex-circle grinding and cutting of roll ring.
* Inverted-angle Grinding Wheel: for inverted-angle of roll ring.
Big- diameter resin roll grinding wheel
More Superhard manufactures a wide variety of standard and custom grinding wheels up-to 36" .
Big - diameter resin roll grinding wheel are produced by block pressing or segment pressing , aggressive cut, great feed per pass, heavy stock removal provide greatly improved grinding performance ideal for accident rolls and cracked rolls without scratches or chatters.
Application : grinding tungsten carbide thermal sprayed rolls, chrome oxide thermal sprayed roll, high speed steel rolls , hard alloy rolls and stainless steel rolls.
Metal 4B9 diamond& CBN grinding wheel for roll fluting
Roll grooves were traditionally for light or thin-walled pipesus and a wide variety of pipe sizes and wall thicknesses without compromising the performance of the pipe joint or reducing the flow rate.
Moresuperhard 4B9 metal diamond grinding wheel for grinding groove of grooved roll, can high efficiency grinding groove and has long life.
Points need to be noticed:
1. Guaranteed to be accurate in each size.
2. The abrasive layer never collapse during grinding.
3. The stability of the wheel between batches.
Case of 4B9 metal diamond grinding wheel for grooved roll
|
Diamond grinding wheel |
Metal diamond grinding wheel |
|
Size of grinding wheel |
D150xT8xW10xX1 |
|
Workpiece |
carbide & HSS Rolls |
|
Grit |
400# & 800# & 1200# for fine grinding. |
Electroplated diamond grinding wheel for groove grinding of grooved roll :
Advantages of grinding wheel for roll :
* High grinding speeds for higher productivity
* Excellent surface finish after grinding
* High profile stability
* Long life
* Very low machine load
How to grinding method?
|
Grinding method |
Grinding wheel feed |
Roll rotational speed |
|
Rough grinding steel roll |
25-35m/s |
30-50m/min |
|
Fine grinding chilled roll |
20-25m/s |
15-30m/min |
|
Ultra-finish/mirror grinding |
15-20m/s |
10-15m/min |
How many kinds of rolls?
According to the shape of roll body：
Rolls are divided into cylindrical and non-cylindrical rolls, the former is mainly used for sheet, strip, profile and wire production, and the non-cylindrical rolls are mainly used for pipe production.
According to the type of rolling mill:
(1) Flat roll
That is, the roll of strip mill is cylindrical. Generally, the roll of hot rolled steel plate mill is made into micro-concave shape. When it is heated and expanded, a better shape can be obtained. The roll of a cold rolling plate mill is made into a slightly convex shape. During rolling, the roll bends to obtain a good shape.
(2) Grooved roll
Grooved roll used for rolling large, medium and small steel, wire and roughing. A groove is carved on the roll surface to shape the rolled piece.
(3) Special roll
Special roll used in steel tube mill, wheel mill, steel ball mill and punch mill. The roll of this mill has a variety of different shapes, such as steel pipe rolling rolling principle of rolling roll conical, drum or disc shape.
According to the product type, the rolling process can be divided into four basic types: strip rolling, pipe rolling, profile rolling, and rod and wire rolling; according to the production process, it can be divided into hot rolling and cold rolling; according to thickness, it can be divided into four basic types. Thin plate (thickness <4mm), medium plate (thickness 4~20mm), thick plate (thickness 20~60mm), extra-thick plate (thickness>60mm, up to 700mm thick). In actual work, medium and thick plates are collectively referred to as "medium and heavy plates".
The parameters of resin roll grinding wheel
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1A1 diamond grinding wheel
|
D(mm） |
H(mm) |
T(mm) |
X(mm) |
|
600 |
203.2 |
25 |
25 |
|
|
600 |
203.2 |
50 |
10 |
|
|
600 |
203.2 |
50 |
25 |
|
|
750 |
305 |
40 |
10 |
|
|
750 |
305 |
75 |
10 |
|
|
800 |
305 |
75 |
10 |
|
|
914.4 |
|
25/50 |
10/25 |
|
|
* Other specifications can be produced according to customers’ requirement |
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