Professional Metal Finishing Services
From protective coatings that withstand harsh environments to precision surface treatments that optimize part performance, Herold Precision Metals (HPM) delivers industrial metal finishing services in Minnesota as part of a fully integrated fabrication process. Our in-house finishing capabilities eliminate the delays and coordination costs of sending parts to outside vendors, providing a single, accountable partner from raw material to finished component.
Metal Finishing & Coating Services We Offer
HPM provides a comprehensive range of finishing and coating solutions for aluminum, steel, stainless steel, and specialty metals. Whether your project demands aesthetics, corrosion resistance, military-grade compliance, or all three, we match the right process to your requirements.
Powder Coating
A durable, electrostatically applied coating that delivers a uniform, chip-resistant finish. Ideal for parts requiring long-term corrosion protection and a clean aesthetic.
Wet Paint
Liquid paint application for complex geometries, tight tolerances, or specifications that call for custom colors and multi-coat systems.
Zinc Plating
Electroplated zinc provides excellent corrosion resistance and improves adhesion for subsequent coatings. Common in hardware, fasteners, and structural components.
Anodizing
An electrochemical process that thickens the natural oxide layer on aluminum, improving corrosion resistance, wear resistance, and surface hardness. Available in standard and hard-coat grades.
Passivation
A chemical treatment for stainless steel that removes free iron from the surface, maximizing the alloy's natural corrosion resistance. Required in many medical, food-grade, and aerospace specifications.
Silk Screen
Precision printing of labels, logos, part numbers, and instructional graphics directly onto metal surfaces for durable, compliant identification.
Etching
Chemical or mechanical material removal for surface texturing, part marking, and decorative applications.
Chromate Conversion Coating
A chemical film applied to aluminum and zinc-plated substrates to enhance corrosion resistance and improve paint adhesion.
Our Metal Finishing Capabilities
HPM's metal finishing services in Minnesota are designed to add measurable value to your parts at every stage of production. Here’s how it works:
Polishing: Achieve a smooth, reflective surface that improves aesthetics, reduces friction, and enhances corrosion resistance.
Brushing: Create a uniform, linear satin finish that is both visually clean and functionally sound. Ideal for visible panels, enclosures, and consumer-facing components.
Coating: Protective coating encompasses a range of applied film treatments that extend component life and performance in wear, chemical, or corrosive environments.
Deburring & Surface Preparation: A clean, burr-free surface is the foundation of any successful finish. HPM's automated deburring equipment prepares parts for optimal coating adhesion, oxide removal, and edge safety before finishing begins.
Why Choose HPM for Industrial Metal Finishing Services?
Single-Source Efficiency: Parts fabricated and finished under one roof means fewer handoffs, faster turnaround, and one point of accountability.
ISO 9001:2015 Certified Quality: Our quality management system governs every finishing process. In more than 13 years and 26 BSI Quality System audits, HPM has had no major nonconformances.
RoHS Compliant: HPM's finishing processes comply with the Restriction of Hazardous Substances (RoHS) directive, making us a qualified finishing partner for electronics, medical, and other programs with strict material-content requirements.
UL Recognized: HPM holds UL recognition, supporting customers whose end products require Underwriters Laboratories certification, particularly for electrical enclosures, panel assemblies, and data center components.
Material Versatility: We work with aluminum, carbon steel, stainless steel, and a variety of specialty alloys, applying the correct finishing process for each material's properties and end-use requirements.
Finishing That Supports Downstream Processes: Our technicians understand how surface condition affects downstream assembly, welding, and performance. We finish parts the way they need to be finished to achieve the best final product.
Industries HPM Serves
HPM provides metal finishing services in Minnesota to manufacturers across a wide range of demanding markets. From defense and data centers to electronics, medical devices, and consumer goods, our finishing expertise supports programs where quality and consistency are non-negotiable.
FAQs: Metal Finishing Services
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We finish aluminum, carbon steel, stainless steel, and various specialty alloys. The appropriate finishing process depends on the base material, end-use environment, and any applicable industry standards. Our team will recommend the right treatment for your application.
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Anodizing is an electrochemical process exclusive to aluminum that forms a very hard, thin oxide layer on the metal's surface. Powder coating is a paint-based process in which a dry powder is applied and thermally cured. It can be applied to aluminum, steel, and stainless steel and offers a wider range of colors and textures.
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Machining, welding, or forming stainless steel can introduce free iron particles onto the surface, which would otherwise accelerate corrosion. Passivation removes those particles with a controlled acid treatment, restoring the alloy's full corrosion resistance. It is commonly required in medical, aerospace, food processing, and defense specifications.
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Yes. Proper surface prep, including deburring, edge rounding, and oxide removal, is critical for coating adhesion and long-term finish durability. HPM's deburring equipment handles this in-house before parts move to the finishing stage.
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Yes. As a full-service precision fabricator, HPM can take parts from raw sheet metal through laser cutting, forming, welding, hardware insertion, deburring, and finishing all under one roof. This is one of the most common ways our customers reduce lead times and simplify their supply chain.
Learn More About Metal Finishing
Explore our resources to understand how proper surface treatment improves part quality, extends component lifespan, and supports your downstream processes.
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The Most Expensive Mistakes in Manufacturing Happen Before the First Part is Fabricated
Poor finishing decisions are among the costliest errors in a production program. Understand where manufacturers lose money before a single part is cut, and how better upfront decisions protect quality downstream.
Trust HPM For Your Metal Part Finishing Services
Ready to elevate your metal components? Request a quote today and experience the Herold Precision Metals difference in metal finishing excellence.