Overview

Inconel alloy 625 is a superalloy consisting of the elements nickel, chromium and molybdenum. It has extremely high corrosion resistance and high temperature resistance. Due to these properties, Inconel 625 has a wide range of applications in many industries, including the paper industry.

In the paper production process, various materials and equipment need to have high corrosion resistance and high temperature resistance to ensure the quality and production efficiency of the produced paper. Due to its excellent properties, Inconel 625 alloy is widely used in the paper industry and provides a reliable material choice for paper companies.

This article will introduce the application of Inconel 625 in the paper industry and discuss its advantages and precautions in this field.

Advantages of Inconel 625

First, Inconel 625 has excellent corrosion resistance. This makes it resistant to corrosion by chemicals such as strong acids and alkalis commonly found in the paper industry. Therefore, it is very suitable for the manufacture of equipment and tools in corrosive environments.

Secondly, Inconel 625 has good wear resistance and high temperature resistance, and can still maintain its stability and strength under high temperature and high pressure conditions. This enables it to withstand the high stress and high temperatures of equipment such as bearings and drums that rotate at high speeds in the paper industry.

In addition, the machinability of Inconel 625 is very good. It can be easily machined and assembled. This reduces production costs and processing time, and improves production efficiency.

In summary, Inconel 625 has broad application prospects and important economic value in the paper industry.

Application of Inconel 625 in Paper Industry

Paper is made from wood through a series of processes. Wood undergoes many physical and chemical treatments during this manufacturing process. This requires very high performance in papermaking equipment. Below are some typical applications of Inconel 625 in paper production.

Cutting Tools and Knives

During the paper production process, the wood is successively peeled, sliced and shredded. These processes all use knives. When cutting wood, the knives are not only subjected to high stresses, but also generate high heat due to friction.

Due to its high hardness, high strength and wear resistance, Inconel 625 can be used in the manufacture of cutting tools and knives. Inconel 625 allows these tools to work at high temperatures with excellent cutting performance and long life.

Steam Heater

The chopped wood is mixed with an acid solution and sent to a steam heater. Steam heater is like a large pressure cooker. It uses high temperature and pressure to react and mix the wood and acid solution. After a few hours, the wood becomes pulp.

The high temperature and high pressure environment in the papermaking process places very high requirements on steam heater equipment and piping materials. Use Inconel 625 to manufacture high temperature and high pressure resistant equipment and pipes. This allows the steam heater to withstand the corrosion of high temperature and high pressure steam and acidic solution.

Cleaning and Bleaching

After the pulp is prepared, it is washed and bleached repeatedly. Washing and bleaching uses a lot of water and bleach. They all have certain oxidizing or corrosive properties.

Inconel 625 has excellent corrosion resistance and oxidation resistance. Therefore it can be used to make cleaning and bleaching equipment.

Dehydration Equipment

After bleaching, the pulp is dewatered under the pressure of two rollers. This process also requires materials with excellent oxidation resistance and strength.

Using Inconel 625 to manufacture the dehydration drum can guarantee its stable operation for a long time. Made of Inconel 625 material can increase its corrosion resistance and high temperature and high pressure performance.

Precautions for Inconel 625 in paper industry

When using Inconel 625 alloy, you need to pay attention to the following aspects:

First, excessive heating and cooling of the material needs to be avoided. This can lead to oxidation and embrittlement of the material, reducing its performance and service life.

Secondly, when using Inconel 625 alloy to make parts, it is necessary to strictly control various parameters in the production process, such as temperature, pressure and atmosphere. Only in this way can the quality and performance of the final product be guaranteed.

In addition, solutions and media containing chloride ions should be avoided. This can lead to corrosion and damage to the material, affecting service life and safety.

Finally, when using Inconel alloy 625 to make parts, care should be taken in cleaning and maintaining the material. This avoids damage and influence of impurities and contaminants on the material.

Conclusion

Inconel 625 is a superalloy widely used in the paper industry. Its excellent corrosion resistance, excellent performance under high temperature and high pressure, and good processability make it widely used in the paper industry. It has important applications in cutting tools and knives, steam heaters, bleaching equipment, etc.

However, during use, some matters need to be paid attention to, such as avoiding prolonged exposure to high temperature and pressure, avoiding excessive use of coolant, etc.

In short, the application of Inconel 625 will continue to be promoted and expanded. It will continue to play an important role in the future paper industry.

We manufacture a wide range of Inconel 625 materials suitable for use in papermaking equipment parts. Please do not hesitate to contact us for any needs.