High Hydrogen Gas Bright Belt Annealing Furnace for Cold Rolling Steel | China Suppliers & Factory
Product Introduction
The bright blet annealing furnace is an advanced industrial equipment used for non-oxidative heat treatment of metal coils, pipes, wires, etc. in a protected atmosphere or vacuum environment. Its core objective is to eliminate internal stress in the material, improve mechanical properties, while maintaining the original bright surface of the metal and avoiding the formation of oxide scales and decarburization layers.
Core Principles and Characteristics
The core principle is to isolate oxygen. The workpiece is placed inside a sealed inner cover, evacuated or filled with high-purity inert/reducing protective gases (such as a nitrogen-hydrogen mixture), and then heated through the outer cover.
1. Uniformity and precise control:
Utilizing strong convective circulation technology, the temperature difference within the furnace can be kept within ±5℃, ensuring uniform material properties. The entire process is automatically controlled by a computer.
2. High production efficiency:
The "double furnace base" design enables quasi-continuous production. While one base heats, the other cools/loads. Capacity can reach 30 tons per furnace.
3. Green and Environmentally Friendly:
Surfaces remain bright and oxidation-free, eliminating the need for traditional acid washing and solving acid pollution issues.
Application Scope
This equipment is applicable to a variety of metal materials and is mainly divided into two categories:
Non-ferrous metals: Finished bright annealing of copper and copper alloys, aluminum alloys, etc.
Ferrous metals: Intermediate or finished annealing of coil and wire products such as stainless steel, silicon steel, ordinary carbon steel, alloy steel, etc.
The full automatic control system manages the whole process of heating, heat preservation and cooling of each hood furnace. Secondary air inlet and saturated steam are used to convert coal into carbon monoxide gas for combustion. The proportion of air intake and steam is automatically controlled by a PLC system, with automatic slag discharge.
Frequently Asked Questions
Q1: What is the primary purpose of a bright belt annealing furnace?
Its main goal is to eliminate internal stress and improve the mechanical properties of metal materials while keeping the surface bright and free from oxide scales.
Q2: How does the furnace prevent oxidation during heating?
It isolates oxygen by using a sealed inner cover that is either evacuated or filled with high-purity inert or reducing protective gases like nitrogen-hydrogen mixtures.
Q3: What is the temperature control accuracy of this equipment?
Thanks to strong convective circulation technology, the temperature difference within the furnace is maintained within a precise range of ±5℃.
Q4: How does the "double furnace base" design improve efficiency?
It allows for quasi-continuous production; while one furnace base is in heating mode, the other can be used for cooling and loading new material.
Q5: Is the annealing process environmentally friendly?
Yes. Because the metal surface remains bright and unoxidized, the traditional acid washing process is eliminated, preventing acid pollution and wastewater issues.
Q6: What types of metals can be treated in this furnace?
It is suitable for non-ferrous metals (copper, aluminum alloys) and ferrous metals (stainless steel, silicon steel, carbon steel, and alloy steel).