Blog

9月 23, 2026

Automatic straightening machine for liquid cooling tubes

Liquid cooling tubes need straightening that won't dent thin walls. Here’s how automatic straightening machines measure, correct, and verify.

9月 04, 2026

shaft heat treatment distortion

Shaft heat treatment distortion can't be fully eliminated. Learn why it happens and when hydraulic straightening is the practical final fix.

8月 28, 2026

cast iron distortion

Cast iron distortion after machining creates bowed, twisted parts. Point-pressure straightening corrects without cracks. Contact Shangda.

8月 28, 2026

can heat treated steel be straightened

Heat-treated steel can be straightened with point pressure, multi-point measurement, and crack monitoring. Learn what the process really requires.

8月 28, 2026

can a bent crankshaft be fixed

Not every bent crankshaft needs replacement. We break down what causes bends, when straightening works, and where automated presses make the repair practical.

8月 28, 2026

bus bar deformation

Bus bar deformation from internal stress can bow, twist, or warp profiles. Automatic point-pressure straightening corrects to 0.01 mm without marks.

8月 28, 2026

bar deformation/bar distortion

Bar distortion usually starts with mill stress and heat treatment. Automated point-pressure straightening corrects it to 0.01mm without marks.

8月 24, 2026

aluminum pipe/tube bending

Aluminum tubing often bows due to residual stress or handling. Learn repeatable straightness checks, safe correction methods, when to scrap, and when automation pays off.

8月 24, 2026

alloy bar distortion

Alloy bars bend from residual stress or handling. Learn to verify runout, use hydraulic straightening for controlled deviations, and avoid risky fixes.

8月 24, 2026

acceptable prop shaft runout

One inspector says a shaft is fine at 0.20 mm. Another rejects the same part at 0.25 mm.

8月 24, 2026

4140 heat treat distortion

When a machined 4140 shaft or bar comes out of heat treat with a visible bow, it's easy to blame the quench.

7月 24, 2026

What to Do When a Half Shaft Bends After Quenching? How to Solve Heat Treatment Deformation Problems of Automotive Half Shafts?

The machine measures the shaft’s runout at multiple points, calculates the exact press stroke and position needed, and applies force in a closed loop—often reaching straightness within 0.01 mm.

7月 24, 2026

Why Do Shaft Components Bend After Heat Treatment? How to Restore Straightness After Heat Treatment Deformation?

Runout that was within 0.02 mm before heat treat suddenly jumps to 0.3 mm, 0.5 mm, or worse. It’s one of those headaches every production shop knows.