PRECESS - PRECESS Vacuum

About PRECESS

Founded in 2019 years – Located in Beijing , China. Global footprint China, Korea and America, PRECESS is a developer of high-performance
vacuum valve, weld bellow and vacuum components. With the innovation and engineering excellence is the driving force of PRECESS’ technology solutions and services.
Customization on PRECESS product signifies our strong focus to provide customers solutions without compromise.

普瑞赛思® brand provides full portfolio of vacuum products in China.
Semiconductor BU – Control valve, transfer valve, ATM door, gate valve, pendulum valve, angle valve.
Solar & Display BU – Control valve, large transfer valve, ATM Door, pendulum valve, gate valve.
GVA and R&D BU – UHV gate valve and angle valve.

Our strength is the wide range of our product portfolio which comprises approximately 100 valves series with more than 1,500 customized and 1,000 standard products,
high steady quality, short lead time, high experienced team. We have solutions for all vacuum levels from sub-atmospheric to extremely high vacuum (XHV).

Aim to be the world best, full portfolio of vacuum valve solution – Control valve, transfer valve, ATM door, gate valve, protection gate valve, pendulum valve, angle valve.

We focus on vacuum technology as our key competence. From the beginning, our approach was to work very closely with our customers. We have a deep knowledge of their industries, needs and expectations and develop new products accordingly. This is our passion for technology innovation.

Applications of our valve are semiconductor process, solar & display, industrial and R&D. Custom options include heating, water cooling, specialty coatings and seals.

High performance after-sales service is our commitment. Our service team is highly experienced and utilized well-established, proven process.

Manufacturing of vacuum valve

Form-die & Zig

We pride in our metal mold design, but also various types and sizes of metal molds. Among metal molds and ZIGs welded metal bellows’ sheet pressing metal molds require precise design, manufacture and management. We are able to predict quality decline by recording and managing the number and time period of production according to the metal mold’s serial number.
By taking proactive measures against these predictions, we are further able to preventquality problems. Because this is directly linked to the product’s quality, price and competitiveness, only our experts are delegated the task of design and management.

Purity of Cleaning

Quality management regarding cleaning is treated equally with leakage as a critical quality point (CQP). The aftertreatment processing of electrolytic polishing perfects, the purification of points not visible or touchable. We have installed 2 systems (total 6 tanks) and D.I watering facilities as ultrasonic cleaners.

Purity of D.I. Water

We use hot D.I. water and ultrasonic cleaning system to block possibility of contamination-related defects. Cleaning processing is applied to all the products we manufacture. For ultrasonic cleaning, products are separated by level of contamination into 6 different cleaning tanks.
We offer solution to various outgassing problems. Electrolytic polishing solution that has remained in gaps over time leaks or corrodes the interior, causing contamination and defects.

Accuracy of Machining

Vacuum valve is our core product. We create, we machine process them with accuracy and precision as our principle. Our product parts meet the promised standard of excellence with our clients.

Management of Material

We have the quality of raw material, ratio of constituents and purity inspection. Especially, for the most important material of the welded bellows AM350, hastelloy-C, inconel and other special alloys, in case of durability and corrosion resistance, components ratios, purity we manufactured. It has a decisive influence on the quality of the finished product. We are responsible for quality control through periodic material. By doing this, to guarantee the quality of products, corrosion resistance, service life and reliability.

Accuracy of Welding

To minimize deformation from welding, we use optimal ZIG. Products requiring high precision are processed a secondary machining to correct for any deviation from the target measurement. In UHV and HV environment, we use the back bead welding process to manufacture vacuum pipes.
To prevent oxidation and minimize outgassing, we weld only after nitrogen charging.

Condition of Inside Welding

We check the interior welding status, which is the most important part of vacuum pipe quality control. We focus not only on the exterior condition of our products but also the interior, which directly affect product performance.

Back bead

Autogenous

Fillet