When using concrete saw blades to pay attention to safety

The safety performance of concrete saw blades is a quality issue that cannot be ignored because production reasons or use reasons caused by "lost teeth" directly affect the performance of concrete saw blades and the operator's safety. In industrial production, wall saw tool use there is a certain danger, for the protection of life and attention, its safety is more and more by the manufacturer and the user's attention. Although the national standards and industry standards have not yet made clear and specific provisions on the safety performance of concrete blades. However, we can learn from the relevant international standards, such as the new EN13236 standard as well as the cases of foreign occurrence to notify the recall problem, improve the production process, improve the monitoring means, to ensure the safety performance of concrete saw blades. Next, we introduce the factors affecting the safety performance of concrete saw blades, the measures to improve the safety performance of concrete saw blades, and the maintenance methods of concrete saw blades.

Here is the content list:

l Factors affecting the safety performance

l Measures to improve safety performance

l Maintenance method

Factors affecting the safety performance

Concrete saw blade outer teeth are not clean, resulting in poor welding bond. Sintering process parameters control is not good, the sintering temperature is low, "under-fired" make welding is not firm, the body itself is low strength, easy to break.

Measures to improve safety performance

Optimize the design

We can use low oxygen content raw material powder, change the outer circle shape of the cement saw blade to "swallow tooth shape", improve the bonding strength of the carcass and the substrate.

Optimize the process

Base body teeth using "copper plating" process; using cold pressing - hot sintering process; using hot pressing - fusion welding process (i.e., laser welding process). Traditional high-frequency welding, welding seam bonding strength (especially when high temperature) is not high enough, the sawing process is easy to occur in the knife head flying crash injury and other accidents, concrete saw blade for concrete safety and reliability is not good. And laser welding is to focus the laser beam as energy, using the mechanism of melt deep welding, melting the transition layer of the cutter bit and the substrate, forming a solid weld, even in the concrete saw blade, drill bit without cooling water cooling situation use, can also ensure a very high welding strength, to ensure the safety of use.

Maintenance method

Concrete saw blade if not used immediately, should be put flat or use the inner hole to hang it up, the flat saw blade cannot be stacked on other items or foot stepping, and should pay attention to moisture, anti-rust corrosion. When the concrete blade for skill saw is no longer sharp, the rough cutting surface must be timely re-sharpening. Repair grinding cannot change the original angle and destroy the dynamic balance. The concrete saw blade's inner diameter correction, positioning hole processing, etc., must be carried out by the factory. If the processing is not good, it will affect the product use effect, and may occur dangerous, reaming in principle cannot exceed the original hole diameter 20mm, so as not to affect the balance of stress.

QuanZhou Sang Diamond Tools Co., Ltd reminds you again that you must pay attention to safety when using concrete saw blades.