Available Surface Treatments

Greno machines a diverse range of metals and tailors each surface treatment to your exact engineering specifications.

Bright Dip Anodizing

This finishing process creates a smooth, highly reflective surface on aluminum components before an anodic layer is applied.

• The Process: Aluminum is chemically polished in a heated acid solution to level micro-roughness, strip away machining lines, and produce a mirror-like shine.

• The Result: Excellent corrosion resistance, long-term color stability, and enhanced surface hardness without altering critical dimensional tolerances. 

Bright dip anodizing is ideal for architectural metalworking and medical devices.

Heat Treating Services

We modify a metal’s internal microstructure through tightly regulated heating and cooling cycles to boost structural integrity and performance.

• Methods Offered: Annealing, quenching, tempering, normalizing, and case hardening.

• Applications: Vital for strengthening high-stress components like gears, shafts, fasteners, and heavy industrial tooling. 

Our computerized temperature control guarantees uniform, highly repeatable structural properties.

Metal Plating

Plating enhances the surface characteristics of a base metal by depositing a thin, durable layer of protective or functional material.

• Methods Offered: Electroplating, electroless plating, and immersion plating.

• Available Deposits: Zinc, nickel, chrome, copper, gold, and more.

• Benefits: Drastically improves wear resistance, electrical conductivity, natural lubricity, and chemical shielding for critical aerospace, defense, and oil & gas machinery.

Sand Blasting

High-velocity abrasive media projection is used to clean, smooth, descale, and texturize metal surfaces prior to final coating.

• Media Options: Aluminum oxide, steel grit, glass bead, and specialized fine abrasives.

• Purpose: Strips away rust, scale, and surface contaminants to generate an ideal anchor profile for paint, powder coating, or plating adhesion. It also aids in non-destructive testing (NDT) by exposing hidden micro-fractures.

Black Oxide Coating

This specialized chemical conversion coating darkens the surface of ferrous metals, stainless steel, and copper alloys.

• Benefits: Provides reliable, low-cost corrosion resistance, reduces light reflection, and prevents galling during assembly—all while adding zero measurable thickness to high-tolerance mating components.