As a key technology for metal surface treatment, the effect of flat drawing process directly depends on equipment operation and process control.

This guide will systematically analyze the key points of the entire process from material preparation to finished product acceptance.

1、 Pre preparation material compatibility testing to confirm the metal material (such as 304 stainless steel/6061 aluminum alloy) and initial surface condition (without deep scratches or oxide layers).

The recommended thickness of the board is 0.5-10mm, and ultra-thin parts need to be equipped with anti deformation fixtures.

The preset device parameters are based on the target texture to select the grit of the sanding belt (straight thread: 400-600 grit; mirror effect: above 1500 grit).

Set the walking speed (usually 6-12m/min) and pressure (30-80N), and adjust according to the material hardness.

2、 Process control, trial grinding and calibration, taking corner materials for trial processing, detecting texture uniformity, and adjusting sand belt tension if necessary (standard value: 40-60N).

Verify the effect using a colorimeter (Δ E<1.5) or a roughness meter (Ra target ± 0.1 μ m).

Batch production monitoring is conducted every 30 minutes, with a focus on observing the consistency of texture at the edges of the board.

Timely clean the residual metal shavings on the sanding belt (it is recommended to stop the machine every 2 hours for cleaning).

3、 Visual inspection standard for finished product acceptance: No visible color difference or broken lines under D65 standard light source.

Functional testing: Salt spray test for 96 hours without corrosion (compliant with GB/T 10125-2021).

Operation mnemonic: "First, inspect the material, then adjust the machine, conduct trial grinding and calibration before mass production, clean the sample inspection is essential, and the mirror drawing is easy to produce