864.990.0762 inquiries@buntyllc.com 444 Fairforest Way, Greenville, SC, 29607, US
High-Quality products
High-quality metal components.
Unbeatable customer service
Highest possible level of service
Get A Quote

Metal Heat Treating Service in Part Manufacturing

Metals in their natural form have inherent limitations in their structure that make them unsuitable for day-to-day demanding applications.

That is why metal components that have not undergone heat treatment can break, crack, and wear out quickly.

Heat treatment uses controlled heating and cooling to change the internal structure of metal parts to make them durable.

In this article, we provide an overview of our heat treatment services, the industries we serve, and why Bunty is your best choice for these services.

Metal Heat Treating Services We Provide

All heat treatment processes at Bunty are performed only on components produced by Bunty as part of an integrated manufacturing workflow, ensuring consistency, traceability, and optimized results.

So, let’s further explore the heat-treating options we provide.

Annealing is a metal treating process that makes hard metals softer and easier to work with. 

This treatment approach happens in three steps that begin with heating metal to a specific high temperature known as the critical temperature. 

The temperatures are maintained at that specific level for a set period and then cooled gradually to harden the metal. 

This often happens inside a turned-off furnace.

Normalizing is a heat-treating service that focuses on creating a uniform and stronger internal metal structure. 

Like annealing, the technique involves heating the metal to a high temperature, then allowing it to cool in ambient, still air. 

However, the air cooling process is faster than annealing and produces metals with more consistent strength.

Quenching is the process of making metal components extremely hard by rapidly cooling them using water, oil, or polymer solutions to lock the internal structure of the metal into a hard state. 

Usually, water gives the maximum hardness, oil provides a balanced cooling rate, while the polymer solutions help reduce the risk of cracking or distortion.

Tempering solves the issue of metals being too hard and brittle. 

The technique involves reheating quenched metal to a specific, lower temperature and then cooling it. 

Doing this reduces the brittleness of the part while keeping most of its hardness. 

Quenching and tempering work together to produce metal parts with the right balance of hardness and strength to avoid cracking and shattering during use.

Case hardening is a process used to harden the outer surface of metal parts, known as the case. 

The process entails introducing hardening agents like carbon or nitrogen to the metal at high temperatures. 

The end product usually has a very tough surface that resists abrasion on the outside but still remains ductile on the inside. 

Carburizing is a type of case hardening that leaves metal parts with a hard outer case, but a flexible inner core. 

The process usually involves heating low-carbon steel parts in a carbon-rich environment, which may be in gas or powder form. 

The metals undergo rapid cooling that locks the carbon in and hardens the outer parts. 

The carburizing technique is commonly used for parts that face heavy friction and impact, such as bearing components, gears, and shafts.

Nitriding, as the name suggests, involves introducing nitrogen into a metal to make it hard and resistant to corrosion and wear. 

In this technique, steel is heated to a relatively lower temperature than carburizing in an environment that has nitrogen. 

The process does not require quenching, which leads to metal parts with minimal distortion.

Industries We Serve

Bunty LLC is a top choice when it comes to providing heat treatment services in the US and beyond. 

Some of the industries we serve include the following.

The automotive industry is the leading consumer of the heat treatment service, with a global market share of 40%

Auto parts like axles, crankshafts, gears, and transmission parts are often hardened using the carburizing technique. 

That is how they can handle heavy loads and friction. 

At Bunty, we are committed to manufacturing critical parts for all types of vehicles, as well as providing heat-treating services for them. 

The aerospace and defence sectors rely on our metal heat-treating services to ensure there are no failures during demanding applications. 

Parts like landing gears and turbine blades need the right treatment and checks to ensure they maintain integrity against high temperatures, stress, and vibration. 

For close to three decades, Bunty has successfully delivered quality parts for these industries and passed their rigorous quality standards.

Industrial machinery and heavy equipment, including those in agriculture, construction, and mining, rely on metal heat treatment to get durable equipment. 

The goal is to have tools that make mechanical work seamless and minimize downtime in an environment where abrasion, constant stress, and heavy impact are common.

The oil, gas, and energy sectors are characterized by extreme pressures, high temperatures, and corrosive chemicals. 

That is why they require heat-treated drillers, valves, pipes, and other metal parts that can resist corrosion fatigue and mechanical stress. 

Bunty LLC has been a reliable partner for these industries because the quality of our metal heat treatment is consistent with the industry’s expectations.

Medical and surgical manufacturing requires the highest level of precision and reliability, which we offer at Bunty LLC. 

We do heat treatment for parts in diagnostic equipment, surgical instruments, orthopedic implants, and prosthetics. 

The end result is metal properties that ensure the material does not harm the body, is mechanically strong, and resistant to sterilization without degradation.

Why Choose Bunty for Metal Heat Treating Services

Bunty LLC has been a metal heat treatment service provider across the US since the 2000s.

 We also have an established track record serving one of the world’s largest Japanese automakers and other tier 1 manufacturers.

Our decades of experience, state-of-the-art technology, and international facilities ensure all our customers get quality custom metal solutions for their various needs.

Bunty’s expert engineers and talented technicians possess the knowledge to serve industries across automotive, aerospace, energy, and medicine.

Businesses across the US and the world beyond trust us because our services are cost-effective but consistently of the highest standards.

Bunty’s production processes and quality control systems work together to deliver metal parts that pass the set standards for each industry.

Whether you need help with design, prototype development, or full production of metal parts, Bunty is here to help you.


Contact BUNTY Today

For more information about metal heat treating services in part manufacturing and our other capabilities, contact us through our website form or request a quote here. We welcome your inquiries.

About us

From a contract manufacturing firm, BuntyLLC evolved into a full service custom machined, forged and cast metal parts fabrication enterprise. We supply global solutions from our headquarters in Greenville, South Carolina.

Get A Quote