Scale Breaker

Scale-breaking tension leveller, also called scale breaker, is generally used for continuous pickling units. Scale breaker machine applies to bend stress to strip steel. The front and rear bridle roll applys tensile stress to the strip; Under the coordination of these two stresses, the strip can produce moderate elongation under the condition that the tensile stress is far below the yield limit of the material. On the one hand, this extension realized by scale breaker can improve the shape of the strip and eliminate the defects such as wave, buckling and camber, at the same time, the internal stress and yield platform are eliminated to improve the mechanical properties of the strip. On the other hand, due to the huge difference between the oxide layer on the surface of strip steel and the iron matrix in performance, under the action of bending and stretching, a large number of oxide layer will fall off, and the oxide layer still attached to the surface will also crack, so as to improve the efficiency of acid tank pickling descaling.

Scale Breaker Application Scope

Application Scope of Scale Breaker Tension Leveler (Dry Type)

Material Material Thickness Strip Width Yield Strength Leveling Speed

Carbon Steel, Stainless steel 1.0--16.0mm 700-1850mm ≤1000MPa ≤360m/min

Application Scope of Scale Breaker (Wet Type)

Material Strip Thickness Strip Width Yield Strength Leveling Speed

Stainless steel 0.8--6.0mm 700-1550mm ≤500MPa ≤150m/min

Scale Breaker Structure Advantages

Structure Advantage of Scale Breaker Tension Leveler (Dry Type)

Two sets of bending unit and one set of leveling unit of the flat rolling machine can effectively remove the oxide skin on the surface of the strip and improve the shape of the strip. Two sets of bending units can also be used for one use and another one as spare according to the conditions of incoming materials and process requirements.

Dry type scale breaker is equipped with blowing system, sealing system and dust collection and dust removal air net, to ensure the environment of equipment usage, at the same time to effectively collect the broken oxide scale.

The frame of scale breaker is an assembly part, each part is annealed separately to eliminate participating stress and ensure the frame is not deformed after long-term use. At the same time, it also provides convenience for later maintenance.

The roller changing device is safe and convenient. The dry type scale breaker is driven by hydraulic pressure. One or all of the roller boxes can be replaced at one time.

The top roller system of dry type scale breaker can be opened quickly to prevent the rolls being damaged when weld seam passing. The lower roller system is used for improving the version by adjusting the insertion amount of the lift. The ball cage coupling is used to connect the driving motor, the lift and the detection encoder to facilitate the flexible adjustment and maintenance.

Structure Advantage of Scale Breaker (Wet Type)

There are two sets of bending units and one set of leveling unit of scale breaker, which can remove the oxide skin on the surface of the strip effectively and improve the shape of the strip. Two sets of bending units of scale breaker can also be used for one use and another one as spare according to the conditions of incoming materials and process requirements.

The frame is an assembled part, and each part is annealed separately to eliminate participating stresses and ensure that the frame is not deformed for long-term use, which also provides convenience for later maintenance.

The roller changing device of the wet type scale breaker is safe and convenient. It adopts hydraulic drive and can replace one cassette or all cassettes at a time.

The top roll system can be opened quickly to prevent roll damaged when welding seam passing, and the top roll system is adjusted by the cylinder to improve the flatness.

The top roller system and the inner wall of the frame have taken effective medium anti-rust measures, which can effectively prevent rust water from dripping on the surface of the strip and affecting the quality of the strip.

Wet type scale breaker is equipped with spray device to clean the oxide scale on the surface of the strip and roll and to ensure the descaling effect.

The main machine of scale breaker has taken effective waterproof, anti-rust measures, good sprinkler and backwater system, which can ensure long-term reliable and stable operation of equipment.

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