What are the manufacturing and cleaning methods for DIN 125 flat washers made of titanium alloy?

Production Method for DIN 125 Titanium Alloy Flat Washers

1. Raw Materials

TA-2 pure titanium or TC-4 titanium alloy sheets and coiled strips are used.

2. Production Process

Uncoil and level the titanium strip, ensuring flatness and eliminating warping.

High-speed stamping dies form the inner and outer diameters in a single operation according to the DIN 125 standard, ensuring high dimensional accuracy and flat end faces.

Deburring and chamfering: Vibration deburring and edge rounding eliminate sharp edges, preventing hand cuts and thread damage.

Heat Treatment (Optional): Stress relief to eliminate internal stresses from stamping, preventing subsequent deformation and warping.

Surface Treatment: Natural finish, acid washing and passivation, sandblasting, anodizing (colored).

Full Inspection and Sorting: Comprehensive inspection of inner and outer diameters, thickness, and flatness; sorting and grading of defective products.

Packaging and Storage: Dust-proof, sealed packaging to prevent oxidation and damage from impacts.

Cleaning Method for DIN 125 flat washers Made of Titanium Alloy

1. Purpose of Cleaning

To remove stamping oil, dust, metal debris, and surface scale, ensuring proper fit during assembly, corrosion resistance, and a clean appearance.

2. Standard Cleaning Procedure

Degreasing: Soak in a neutral degreasing agent and warm water to dissolve stamping and drawing oils and grease.

Ultrasonic Cleaning: Use ultrasonic cleaning to remove fine dust and metal particles from holes and surfaces.

Rinsing: Rinse multiple times with pure water to ensure no cleaning agent residue remains.

Pickling and Passivation (Specialized Process): Using a titanium-specific pickling solution, remove surface oxidation layers and form a dense passivation film to enhance corrosion resistance.

Drying: Air-dry or dry in a constant-temperature oven until completely dry before packaging to prevent water marks.

Sorting and Packaging: Clean, flawless flat washers are sorted and packaged by grade.

3. Prohibited Practices (Common Mistakes to Avoid)

❌ Do not soak in strong acids or alkalis ❌ Do not scrub with steel wool or hard brushes (will scratch the surface) ❌ Do not bag while still damp after washing (prone to water stains and discoloration)

Summary in a Nutshell

Production: Stamping and blanking of titanium sheets → Deburring → Stress relief → Surface treatment → Sorting, packaging, and cleaning: Degreasing → Ultrasonic cleaning → Rinsing → Acid washing and passivation → Drying and storage