The heat shrink tool handle is an intermediate clamping element that connects the spindle and the tool. There are no parts between the tool and the heat shrink handle. When the tool is clamped, the heat induction device/tool holder heat shrink machine is used to heat the clamping part of the heat shrink tool holder to 250℃-425℃ in a short time.
The tool holder and tool are quickly loaded into the heat shrink tool holder as its inner diameter expands beyond the diameter of the clamping portion of the tool. After hot loading, the tool holder and the heat shrink tool holder are cooled, and the tool holder and the heat shrink tool holder form an interference fit to achieve reliable, high-precision and effective clamping of the tool holder.
Heat shrink tool handles, like iron products, will rust when exposed to the air for a long time. After surface rust occurs, the metal will slowly corrode internally over time. When a tool is clamped in a rusted state, the installation of the tool will be difficult and the strength of the corroded part will be reduced. When the tool is hot pressed, stress concentration will occur there, which can easily lead to cracking. If used continuously, the clamping force will decrease. This causes the tool to slip, reducing the clamping accuracy and making it unusable.
So how to deal with rust and how to maintain it to avoid rust? Let’s first take a look at why the handle rusts. The reasons may be as follows:
1. Moisture in the air adheres to the handle, and the metal reacts with the moisture to cause rust.
2. When the handle is heated, the grease content on the surface increases, making the handle prone to rust.
3. When coolant is introduced into the tool holder and chuck through the spindle through hole, rust will occur deep inside the tool holder due to residual coolant.
Knowing the reason, we can take corresponding maintenance measures to avoid rust. For example: after using the heat shrink tool holder, use an air gun to blow away all kinds of waste chips, cutting fluid and other impurities on the tool holder, especially the inner hole of the tool holder. After cleaning with an air gun, spray anti-rust oil on the inside and outside of the handle for anti-rust protection. If you want to use a heat-shrinkable handle that has been treated with anti-rust treatment, clean the anti-rust oil on the inner and outer surfaces of the handle before heating the handle. When the heat shrink handle is not in use, it is recommended that the tool remains inside the handle to prevent impurities from entering the inner hole of the handle.
