chrome hydraulic cylinder rod supplier / Chrome-Plated Bar Production Process
From Raw Material Selection to Final Packaging – Precision at Every Step
1. Raw Material Processing
Select and cut steel for initial preparation, ensuring it's ready for further processing.
2. Performance Testing
Test the raw material to ensure it meets the necessary performance standards.
3. Surface Stripping
Remove oxidation and impurities from the surface of the steel using stripping methods.
4. Heat Treatment
Heat the material to improve its hardness and strength through controlled processes.
5. Straightening
Straighten the material to prevent bending and ensure it maintains a consistent shape.
6. Surface Polishing
Polish the surface to improve smoothness and prepare for the plating process.
7. Chrome Plating
Apply a chrome layer to enhance the material's durability and resistance to corrosion.
8. Polishing
Perform final polishing to ensure a flawless and smooth chrome surface.
9. Final Inspection of Chrome-Plated Rods
Final inspection ensures chrome-plated rods meet accuracy, surface quality, hardness, and performance standards.
10. Packing
Chrome-plated rods are packaged in cardboard boxes, wooden crates, plastic film, or foam to protect them during transport.
Quality Control & Standards Section
The quality control of chrome-plated bars includes dimensional checks, surface roughness testing, hardness tests for wear resistance, plating thickness assessments, visual inspections, straightness and warpage evaluations, mechanical property tests, corrosion resistance checks, metallographic analysis, and non-destructive testing (NDT). These tests are conducted to ensure the product meets international standards and client specifications, guaranteeing high-quality and reliable performance.
1. Dimensional Inspection
Ensures the chrome-plated bars meet required outer diameter, inner diameter, length, and surface roughness using precise measuring tools.
2. Surface Roughness Testing
Measures surface smoothness with a profilometer to ensure it meets the specified Ra values, avoiding defects affecting performance.
3. Hardness Testing
Tests the hardness of the chrome plating for sufficient wear resistance, using Rockwell or Vickers hardness methods.
4. Plating Thickness Inspection
Verifies chrome layer thickness for wear and corrosion resistance using a thickness gauge, typically between 2 -5 mm.（Customizable）
5. Optical inspection
AOI equipment can improve inspection efficiency and accuracy and reduce manual inspection errors in the automated production process.
6. Straightness and Warpage Testing
Measures straightness with a gauge to ensure the bars are not bent or warped, meeting specified tolerances.
7. Mechanical Property Testing
Tests the tensile strength, yield strength, and elongation of the material to ensure it can withstand normal operational loads.
8. Corrosion Resistance Testing
Ensures adequate corrosion resistance by performing salt spray or chemical testing to meet environmental requirements.
9. Metallographic Analysis
Uses microscopic observation to analyze material structure, checking for uniformity and defects in both steel and plating layers.
10. Inspection
Inspect the finished product for size, appearance, and performance quality.