1、 Comparison of core process principles, characteristics, mechanical drawing, chemical etching, mechanism of action, physical grinding (sand belt/wheel and material mechanical action), chemical dissolution (acid/alkali solution selective corrosion), energy form, mechanical energy (motor drive), chemical energy (redox reaction), material removal method, controllable cutting (μ m level), isotropic corrosion (prone to side corrosion), heat affected zone, local temperature rise<150 ℃ (controllable), no thermal effect, but may change the material grain boundary structure.

2.

Comparison of 6 core advantages: 1 Machining accuracy control: Mechanical drawing can achieve precise control of Ra0.1-3.2 μ m (adjusted by sand belt mesh), directional texture angle deviation<2 ° (guaranteed by CNC system), chemical etching: surface roughness depends on mask accuracy (usually Ra0.8-6.3 μ m), edge will produce 10-50 μ m side corrosion (cannot be completely avoided) Material Applicability Material Type Mechanical Drawing Advantages Chemical Etching Limitations High hardness alloys can be processed HRC>60 Materials (such as hard alloys) can only be processed Materials that can be corroded by specific acid solutions Isotropic processing of composite materials (such as carbon fiber reinforced parts) Differences in corrosion rates of different components lead to uneven surfaces Ultra thin parts (<0.3mm) Vacuum adsorption ensures flatness and is prone to perforation due to uneven corrosion Production efficiency comparison Batch processing speed: Mechanical drawing: 8-15 ㎡/h (automatic feeding system) Chemical etching: 2-5 ㎡/h (including mask making, corrosion, and cleaning time) Type change time: Mechanical drawing: Replacing the sand belt only takes 3-5 minutes Chemical etching: Replacing the etching solution takes more than 30 minutes (including waste liquid treatment) 4 Environmental and safety indicators: Mechanical wire drawing, chemical etching, hazardous waste, metal dust (recyclable), waste acid containing heavy metals (hazardous waste code HW34), energy consumption 15-30kW · h/㎡, 40-80kW · h/㎡ (including wastewater treatment), VOC emissions, only trace cutting oil mist, strong acid volatile gases (requiring professional waste gas treatment) Economic analysis of unit cost (taking 1 ㎡ of 304 stainless steel plate as an example): Mechanical drawing: 6-12 yuan (including sand belt loss+electricity cost) Chemical etching: 25-40 yuan (including mask+etching solution+wastewater treatment) Equipment investment return rate: Mechanical drawing: 1.5-2 years of cost recovery (calculated based on a two shift system) Chemical etching: 3-5 years of cost recovery (environmental protection equipment accounts for 40% of total investment) 6 Special effects enable mechanical drawing with unique capabilities: gradient texture (through real-time adjustment of pressure and speed), 3D stereoscopic drawing (five axis linkage model), chemical etching features: micro level pattern etching (requires photolithography technology), through-hole/blind hole processing (minimum aperture up to 0.05mm), typical application scenario selection recommendations, demand scenario recommendations, process key reasons, elevator/home appliance panel mechanical drawing, high cost-effectiveness+stable texture effect, precision electronic component identification, chemical etching can achieve micro level fine patterns, aerospace structural parts, mechanical drawing to avoid stress concentration caused by chemical corrosion, jewelry surface treatment, chemical etching Complex patterns can be formed in one go.

4.

Future technology integration trend: Composite processing technology: chemical etching of patterns first, followed by mechanical drawing of backgrounds (to enhance product layering).

Intelligent compensation system: AI visual detection of etching depth, real-time adjustment of mechanical drawing parameters.

Compensation decision suggestion: When pursuing efficiency, environmental protection, and cost, mechanical drawing is the optimal solution for industrial mass production.

When micro patterns and complex shapes are needed, chemical etching is still irreplaceable