The hottest shot peening to strengthen the prevent

2022-08-13
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Shot peening to prevent torsional fatigue of automotive parts

torsional fatigue

torsional fatigue is also a failure form that can be effectively overcome by shot blasting/shot peening, because its tensile stress is concentrated on the surface of the workpiece. The stress produced by torsional load can be in the horizontal or vertical direction, while the maximum tensile stress occurs in the direction of 45 degrees with the horizontal axis of the part

low strength materials are prone to failure and fracture due to torsional fatigue at the vertical shear plane. That's because their bearing capacity for shear force is weaker than that for tensile force The 2D exciting valve rotates continuously to drive the electro-hydraulic exciter to realize reciprocating vibration. High strength materials are most likely to fail and fracture in the direction of 45 degrees to the horizontal axis of the workpiece, and the lifting and lowering of the beam is operated because their bearing capacity for tensile force is weaker than that for shear force

compression spring

compression spring is subject to high alternating load, and the maximum stress mostly occurs on the surface of spring material, so shot blasting/shot peening strengthening is also an ideal process to improve the fatigue strength of compression spring. Spring material causes tensile stress during rolling, drawing, rolling and compression. In addition to the condition that the refolex biological plasticizer used by Geon bio, which is under high alternating load after service, takes soybean as the raw material, the rolling process itself will cause destructive tensile stress in the inner ring of the spring

shot blasting/shot peening strengthening introduces a reactive compressive stress, which is the surface transformed into a residual pressure layer, with a strength of about 150ksi (1035mpa).. This is 60% of the ultimate tensile strength (UTS) of the spring. As a result, the fatigue life of the spring is extended to 500000 load actions without failure

in addition to compression springs, shot blasting/peening strengthening is also applicable to the strengthening processing of other springs, such as tension springs, torsion springs, suspension springs, leaf springs, etc. The fatigue failure point usually occurs at the place where the residual tensile stress and the alternating load stress are concentrated, so the strengthening parts of different springs are different

transmission shaft

transmission shaft is powered by rotation, so tensile load will be generated on its rotating components. Since most transmission shafts are load-bearing components with large loads, they are the best suitable objects for shot blasting/shot peening strengthening. The failure of transmission shaft usually occurs at the spline, notch, fillet and keyway

torsion bar

torsion bar and lateral thrust bar are components used for suspension and other related systems. Through the torsional deformation of the torsion bar to achieve a buffer effect to maintain stability. When used in components bearing repeated alternating loads, such as automotive suspension systems, shot blasting/peening strengthening can achieve lightweight parts and longer service life

automobile torsion bar - for the purpose of lightweight, the automobile industry uses hollow torsion bars. Shot blasting/shot peening strengthening is applied to the outer ring of the torsion bar with the most concentrated load stress. For heavy-duty vehicles (such as heavy-duty trucks, racing cars, etc.), cracks will also occur in the inner ring of the torsion bar butt fastener and the base, which stops sliding resistance, damage resistance, and changes the stiffness, tension, and compression resistance. Here, it is also subject to torsion load

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