I. Directly affects the quality of welded products
1. Substandard welding precision leads to workpiece scrapping: Low-grade cast iron or thin steel plate materials lack sufficient strength and deform easily during use. Failure to maintain flatness and hole-center distance precision causes clamping and positioning errors; ultimately, the welded components exceed geometric tolerance limits, resulting in the scrapping of entire batches.
2. Causes welding defects and reduces structural strength: Substandard materials containing porosity, sand holes, or slag inclusions lead to uneven local stress during welding. This makes the process prone to weld cracks and unstable melt pools, while also causing weld spatter inclusions. These issues significantly reduce the mechanical strength of the welded components, creating a risk of fracture during use.
3. Poor welding consistency: Insufficient material rigidity causes minute deformations with every clamping operation. Consequently, dimensional consistency across a batch of welded workpieces is poor, failing to meet the precision requirements for mass production.
II. Significantly shortens equipment service life and increases operating costs
1. Premature deformation and scrapping: Substandard products often skip the aging heat treatment step, leaving internal casting stresses unreleased. Significant, irreversible deformation appears after just 1–2 years of use, rendering the equipment unusable; the service life is only one-third to one-half that of qualified products.
2. Rapid wear and high maintenance costs: Working surfaces made of low-hardness materials lack wear resistance. Positioning holes wear and enlarge over time, reducing the fit precision of locking pins. This necessitates frequent part replacements, resulting in maintenance costs far higher than those for qualified products.
3. Susceptibility to rust and damage: Inferior materials often undergo poor anti-rust processing, making non-working surfaces prone to oxidation and corrosion. Rust spreads gradually to working surfaces and positioning holes, eventually leading to the scrapping of the entire platform.
III. Poses serious safety hazards
1. Risk of collapse due to insufficient load-bearing capacity: When processing heavy workpieces, materials failing to meet load-bearing and rigidity standards may crack at the tabletop or suffer leg fractures under load. This can cause workpieces to fall, potentially leading to personal injury accidents.
2. Poor machining process stability: Substandard material quality results in insufficient platform rigidity, making the platform prone to wobbling during welding; this not only compromises weld quality but can also cause the welding robot's trajectory to deviate, potentially leading to equipment collisions.
