We are independent & ad-supported. We may earn a commission for purchases made through our links.

Advertiser Disclosure

Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.

How We Make Money

We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently from our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.

What is Heat Fusion?

By Larry Ray Palmer
Updated May 17, 2024
Our promise to you
About Mechanics is dedicated to creating trustworthy, high-quality content that always prioritizes transparency, integrity, and inclusivity above all else. Our ensure that our content creation and review process includes rigorous fact-checking, evidence-based, and continual updates to ensure accuracy and reliability.

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

Editorial Standards

At About Mechanics, we are committed to creating content that you can trust. Our editorial process is designed to ensure that every piece of content we publish is accurate, reliable, and informative.

Our team of experienced writers and editors follows a strict set of guidelines to ensure the highest quality content. We conduct thorough research, fact-check all information, and rely on credible sources to back up our claims. Our content is reviewed by subject matter experts to ensure accuracy and clarity.

We believe in transparency and maintain editorial independence from our advertisers. Our team does not receive direct compensation from advertisers, allowing us to create unbiased content that prioritizes your interests.

Heat fusion, also called heat welding or plastic welding, is an industrial process that uses heat to join two or more pieces of a given material to create one solid piece. Using the heat fusion process, the individual pieces are heated to the point where the material begins to soften, and then they are pressed together. When done properly, the separate pieces form a bond and become one unified part. This manufacturing process is used to join a variety of materials, including plastic, glass and metal.

The industrial practice of heat fusion relies on a principle called the heat of fusion. As a material is heated, the molecular bonds begin to break down, and the material begins to turn into a liquid. This is commonly called the melting point, and when melting begins to occur, the heat of fusion has been reached. At this point, two pieces of melting material can be put together under pressure, and the molecules of each piece will pair together to form a solid piece as the fused joint cools. After the joint has cooled, the two pieces are permanently joined and are indistinguishable.

Heat fusion, as used in manufacturing, presents a number of advantages. Using heat fusion to join parts ensures a watertight and airtight seal between the parts. The melting and joining of the parts using the heat fusion process will create a stronger permanent bond than that which could be achieved using adhesives, because the two parts essentially become one solid piece. By melting pieces together to form new plastic that can be used in the manufacturing process, heat fusion makes it possible to recycle materials that might otherwise be discarded.

The process of heat fusion is used in a variety of applications, from the creation of glass art to coins and plastic products. In the plastic manufacturing industry, small pieces of plastic are heated and joined to make solid sheets of the material. In other cases, individual thermoplastic parts are joined using a heat fusion machine to create a solid product.

The most common industrial use of heat fusion is the connection of thermoplastic pipes and joints. This is done by using heat to melt the ends of the plastic pipe before pressing them together or placing them into the joints. Melting the ends of two pipes and then pressing them together without a joint is called butt plate welding. If a joint is used to connect the two pieces, it is called socket fusion.

About Mechanics is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.

Discussion Comments

About Mechanics, in your inbox

Our latest articles, guides, and more, delivered daily.

About Mechanics, in your inbox

Our latest articles, guides, and more, delivered daily.