Expertise
What's impregnation?
Excellent impregnation technology that fills invisible "pores"
It involves soaking and impregnating the base material with chemicals.
Impregnation is the process of impregnating a porous material with a special chemical to add new functionality.
At our company, we infiltrate porous parts of metal castings, powder metallurgy, ceramics, resins, etc. with high-quality Impregnantss that are listed on the Qualified Product List according to MIL-I-17563C, achieving close to 100% sealing effects.
Our impregnation process ~MIL-STD-276 MethodB~
We, Chuhatsu, recommend the method according to MIL-STD-276A Method B.
- Vacuuming
Air is removed from the micropores, making it easier for the Impregnants to penetrate. - Injecting impregnant
Vacuum the Impregnants until the target parts is fully immersed. - Atmospheric air release
Return from vacuum to atmospheric pressure. This allow the Impregnants to penetrate to some extent into the micropores. - Pressurization
After returning to atmospheric pressure,compressed air is used to pressurize the Impregnants to penetrate every inch of the micropores.
- Rinsing
Wash away the Impregnants adhering to the parts surface with water. Some of the Impregnants may be recovered by centrifugal force or tilting before rinsing with water, or the washing step may be skipped for special purposes. - Curing
By heating the Impregnants penetrated into the micropores, it undergoes a chemical reaction and hardens.
Analysis Support (Inspection of Impregnation Process and Testing of Impregnants)
Our new technology
Development of Impregnants for laminated cores
We have developed a new impregnant with high level of adhesion and insulation performance, capable of penetrating in large quantity in a single treatment, into the whole space between layers of laminated cores employed in motors. Demand for motors is expected to increase further in the future, and as more efficient motors are required to be developed, we can help with our impregnation technology.
Development of Impregnants compatible with new materials and functions
With the advent of 3D printers, it has become possible to create prototypes of any shape in a short period of time. Particularly in powder modeling, gaps can occur and impregnation is required to improve sealing and safety. Heat exchangers and piping parts with complex shapes unique to 3D printers face challenges such as diversification of impregnating sealing ability and durability, and increasingly complex washing techniques. We provide a complete support by leveraging our many years of experience in impregnation technology.
Development of new Impregnants for a sustainable society
We work to develop carbon-neutral Impregnants to build a sustainable future. We use biomass raw materials to provide environmentally friendly products. Furthermore, we aim to contribute to the global environment by focusing on product development that eliminates environmentally hazardous substances.
Need of impregnation
1. Typical “porosity” condition
This is a typical "porosity" condition that causes pressure leaks. As it is, it cannot withstand the pressure of liquids and gases, and in order to obtain high quality products,Impregnation treatment is required.If impregnation is not performed, various problems may occur. Also, if plating or painting is applied in this condition, it may cause clouding, blistering, or peeling. Ensure the quality and durability of your products with impregnation treatments.
2. Prevent future hazards with impregnation
The porosity is present inside the material but has not gone through. In this case, it is not possible to detect leaks with a pressure test, but, leakage may occur due to corrosion of the base material or by posterior operations. If plating or painting is applied in this condition, it may cause clouding, blistering, or peeling. The impregnation treatment assures a durability and lasting quality of your products.
3. When impregnating after machining (a single separate porosity)
The situation where there is a separate porosity inside the part. In this case, no leakage can be detected in the pressure test, nor shall impregnation treatment make impregnant penetrate into the porosity. The porosity, however, may possibly come out after machining operations, and therefore the impregnation treatment should be done after machining operations, in order to ensure your products' quality and durability.
