{"id":26003,"date":"2025-12-14T01:15:00","date_gmt":"2025-12-14T01:15:00","guid":{"rendered":"https:\/\/yonglihaomachinery.com\/?p=26003"},"modified":"2025-12-14T01:58:10","modified_gmt":"2025-12-14T01:58:10","slug":"oxygen-fuel-cutting","status":"publish","type":"post","link":"https:\/\/yonglihaomachinery.com\/ja\/oxygen-fuel-cutting\/","title":{"rendered":"\u9178\u7d20\u71c3\u6599\u5207\u65ad\u3068\u306f\uff1f\u305d\u306e\u30d7\u30ed\u30bb\u30b9\u3068\u30e1\u30ea\u30c3\u30c8\u3092\u89e3\u8aac"},"content":{"rendered":"

At Yonglihao Machinery, we are a prototyping service provider<\/a><\/strong>. While laser cutting is our main process for most sheet and plate work, there are certain jobs where we still use oxy-fuel cutting. Also known as flame cutting or torch cutting, this method remains valuable in our workflow.<\/p>\n

We rely on oxy-fuel for thick carbon steel. When parts need to be prepared for welding, this method is especially effective. Portability is another key advantage, making oxy-fuel our choice for jobs in the field. Managing lead times for heavy plate becomes easier with this process. Meanwhile, for thinner metals where precision is crucial, laser cutting<\/a><\/strong> remains our top option.<\/p>\n

In this article, you’ll find a clear explanation of the oxy-fuel process. You’ll learn about its practical uses, its limitations, and how to determine when it’s the right choice for your project.<\/p>\n

What Oxy-Fuel Cutting Is?<\/h2>\n

Oxy-fuel cutting is a thermal process that uses a fuel-oxygen flame to preheat steel. After reaching the right temperature, a jet of pure oxygen oxidizes the metal, forcing it out of the cut as slag. This combination of heating and oxidizing forms the basis of oxy-fuel cutting.<\/p>\n

This process works best on mild steel and many low-alloy steels, as their oxides form and can be removed cleanly. You can use it for a wide range of thicknesses, from 0.5 mm to 250 mm. With special systems, it\u2019s even possible to cut metal much thicker than that.<\/p>\n

We often recommend oxy-fuel cutting for steel that\u2019s too thick for lasers to handle effectively. Creating beveled edges for welding is another situation where this method excels. Additionally, when a cut edge will be machined later, using oxy-fuel cutting remains a smart choice.<\/p>\n

How Oxy-Fuel Cutting Works?<\/h2>\n

Oxy-fuel cutting is a form of controlled, rapid oxidation. First, the steel is heated to its ignition temperature. This is typically between 700\u2013900\u00b0C, a bright red heat below its melting point.<\/p>\n

Then, a stream of cutting oxygen starts a chemical reaction. This reaction creates heat, forms iron oxide, and pushes it out of the cut. The oxygen jet does not simply melt a groove. Instead, it supports the oxidation and pushes the molten oxide away.<\/p>\n

A clean cut relies on four key principles.<\/p>\n