How To Select And Adapt Titanium Plate Surface Conditions?

 

 

(I) Aerospace Field

It requires that the surface must adapt to harsh working conditions such as high and low temperatures, ultraviolet rays and air flow scouring.

Aircraft skin and load-bearing structural parts: Prioritize cold rolling + shot peening strengthening + PVD coating to improve fatigue strength and wear resistance;

High-temperature components such as engine nacelles: Micro-arc oxidation is adopted to form a ceramic layer with both high temperature resistance and corrosion resistance;

Precision instrument cabins: Pickling + mirror polishing are selected to ensure high cleanliness and dimensional accuracy.

 

(II) Chemical Equipment Field

It requires strong corrosion resistance and a clean surface to prevent medium pollution and equipment leakage.

Ordinary acid-alkali working conditions: Prioritize pickled surfaces, and rely on the clean surface and natural oxide film to meet basic anti-corrosion requirements;

High temperature, high pressure and strong corrosion working conditions: Anodic oxidation + PTFE coating is adopted to improve corrosion resistance;

Welding parts: Pickling pretreatment is required before welding to remove oxide scale and ensure welding quality.

 

(III) Medical Implant Field

Good biocompatibility, non-toxicity and cleanliness, resistance to body fluid corrosion, and appropriate roughness to promote osseointegration.

Bone fixation plates and artificial joints: Prioritize laser texturing + electropolishing; the micron texture is conducive to osseointegration, and the surface is clean and free of impurities;

Precision parts such as cardiac stents: Mirror polishing is adopted to reduce tissue irritation;

 

(IV) Architectural Decoration Field

With core requirements of beauty, atmospheric corrosion resistance, easy cleaning and slip resistance.

Curtain walls and suspended ceilings: Prioritize anodized surfaces with rich colors, corrosion resistance and non-fading properties;

Stair treads and handrails: Sandblasted surfaces are selected for anti-slip safety;

High-end decoration: Mirror or brushed surfaces can be used for an exquisite texture; brushed surfaces also have anti-fingerprint and easy-cleaning features;

A nano hydrophobic coating can be added for outdoor use to extend service life.

 

(V) Marine Engineering Field

It requires seawater corrosion resistance, anti-fouling of marine organisms and wear resistance.

Offshore platforms and ship decks: Prioritize micro-arc oxidation, and the ceramic layer prevents corrosion and biological adhesion;

Underwater equipment components: Pickling + passivation are adopted to improve corrosion resistance;

Anti-slip decks: Sandblasting + anti-corrosion coating are selected to balance slip resistance and corrosion resistance.

 

(VI) Consumer Electronics Field

It requires an exquisite appearance, good texture, wear resistance and anti-fingerprint performance.

Mobile phone middle frames and watch cases: Prioritize brushing + PVD coating for a delicate texture, wear resistance and anti-fingerprint properties;

High-end jewelry and earphone cases: Anodic oxidation or mirror polishing can be selected;

Precision parts: Laser engraving can be used to draw high-precision patterns and LOGOs.

 

 

(I) Clarify core requirements and lock in surface characteristics

Corrosion resistance: Prioritize pickling, anodic oxidation, micro-arc oxidation

Appearance and texture: Prioritize polishing, anodic oxidation, brushing

Anti-slip / improving coating adhesion: Prioritize sandblasting

High temperature resistance: Prioritize micro-arc oxidation

Biocompatibility: Prioritize electropolishing, laser texturing

 

(II) Balance performance and cost, avoid over-processing

Ordinary structural parts: Select hot-rolled or cold-rolled surfaces without fine processing;

Basic anti-corrosion with limited budget: Prioritize pickled surfaces for high cost performance;

High-end scenarios such as aerospace and medical care: Adopt high-precision processes such as micro-arc oxidation, PVD coating and mirror polishing;

For welding and post-coating: Select pickled or cold-rolled surfaces to reduce processing difficulty.

In terms of material, TA1/TA2 commercially pure titanium is preferred, which costs more than 30% lower than titanium alloys. Do not blindly select high-end alloys if the performance meets the requirements.

 

(III) Consider the service environment and predict the service life

Strongly corrosive environment: Do not use hot-rolled or ordinary cold-rolled surfaces; prioritize anodic oxidation and micro-arc oxidation with regular maintenance;

High temperature environment: Prohibit anodic oxidation; select micro-arc oxidation or TiAl intermetallic compound coating;

High-frequency friction scenarios: Prioritize PVD coating to improve wear resistance;

Outdoor architectural decoration: Select anodic oxidation + hydrophobic coating to resist acid rain and atmospheric corrosion.

 

(IV) Pay attention to standards and quality, avoid selection risks

The selection of titanium plates must comply with the corresponding industry standards:

Aerospace: HB 5462-2020, ASTM E2375

Medical: YY/T 0641-2022, ASTM F86

Chemical industry: GB/T 31304-2014, ISO 12944

Choose products from regular manufacturers and ask for quality inspection reports.

 

(V) Take subsequent processing into account to improve adaptability

Welding: Prioritize pickled surfaces to remove oxide scale and prevent blowholes and cracks;

Bending and stamping: Select cold-rolled surfaces with good toughness and resistance to scratching;

Spraying / coating: Select sandblasted surfaces to improve adhesion and prevent falling off.

At the same time, reserve processing allowance to avoid the impact of surface treatment on dimensional accuracy.

 

 

Baoji Ruihang is a manufacturer of titanium and non-ferrous metal products. For any purchasing needs, feel free to contact us at email: Sam.Rui@bjrh-titanium.com.