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Stainless steel Screws Suppliers

As a widely used fastener, Screws have many significant characteristics to ensure their performance. They are usually made of high-strength materials, ensuring their strength and durability, and can remain stable for a long time in various harsh environments. The screws are detachable for easy maintenance and replacement, which greatly improves work efficiency. Screw sizes and specifications are standardized to ensure compatibility with other fasteners and reduce errors and confusion during installation. Its unique thread design not only provides strong tightening capabilities but also adapts to different installation needs. Some screws also have anti-loosening and locking functions, allowing them to remain tight under vibration or impact conditions. At the same time, screws also have good corrosion resistance and thermal stability and are suitable for a variety of special environments. These properties make screws an indispensable fastener in various fields.

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Yuyao Cili Machinery Co., Ltd.

Yuyao Cili Machinery Co., Ltd. is located in Yuyao City, Zhejiang Province, on the south bank of Hangzhou Bay Bridge, the center of the economic triangle connecting Shanghai, Hangzhou, and Ningbo, with a geographical environment and convenient transportation. As China Stainless steel Screws Suppliers and Screw Factory, the company has passed ISO9001-2008 quality management certification, the factory covers an area of 15,000 square meters, the factory has more than 200 employees, specializing in self-tapping self-drilling screws wood screws, and window expansion screws design and production, the company's annual output value of about 10 million US dollars, the monthly output of about 1000 tons.

Our factory has a full set of production equipment, including wire drawing, annealing cold beating, clamping, rolling, advanced equipment, professional technical personnel, and a quality inspection team to ensure we can provide customers with high-quality products. With many years of experience accumulated in the fastener industry, we can better according to the samples or drawings provided by customers and production.

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What is the machining process of the products under the category of Stainless steel Screws?

Yuyao Cili Machinery Co., Ltd. is located on the south bank of the Hangzhou Bay Cross-sea Bridge, one of the most dynamic economic regions in China. It has a superior geographical location and convenient transportation. Since its establishment, the company has always focused on the design and production of self-drilling screws, wood screws and window expansion screws. The company strictly follows the ISO9001-2008 quality management system, and through a full set of production equipment and the cooperation of a professional team, it ensures that it provides high-quality products and services to customers around the world. Stainless steel Screws is one of our company's products. The production of stainless steel screws involves several key process steps. The following will introduce in detail the machining process we use in the manufacturing process of stainless steel screws to ensure the precise execution of every detail to meet customer requirements and international standards.

1. Wire drawing process
The production of stainless steel screws starts with material selection. The raw material is usually high-quality stainless steel wire. Wire drawing is the first step in the production process, which is to stretch the thick stainless steel wire to the required diameter. This process requires precise diameter control and ensures the surface quality and flatness of the wire.
During the wire drawing process, the wire passes through multiple dies, gradually reducing its diameter. Each die is slightly smaller than the previous one, allowing the wire to be gradually reduced to the desired size. The key to wire drawing is to ensure that the surface of the wire is smooth and free of any defects or flaws, while maintaining the strength and toughness of the stainless steel.

2. Annealing
In order to ensure the flexibility and processability of the material in subsequent processing, the stainless steel wire after drawing is usually annealed. Annealing is to heat the stainless steel wire to a specific temperature and then slowly cool it to reduce the hardness of the material, eliminate internal stress, and make it easier for subsequent cold forming and threading.
In this process, temperature control is crucial, and too high or too low temperatures will affect the final performance of the stainless steel. Through strict annealing process control, we can ensure that the stainless steel screws achieve the best balance between strength and ductility.

3. Cold forming
Cold forming is one of the core processes in screw manufacturing, which determines the head and shape of the screw. In this process, the stainless steel wire passes through a high-speed impact forming machine and is hammered multiple times to form the head shape and preliminary contour of the screw. The characteristic of cold forming is that it does not require heating of the material, but directly plastically deforms the metal through mechanical impact to form the basic shape of the screw.
The advantage of cold forming is that it can efficiently and accurately produce screw heads of various shapes, ensuring the consistency and high quality of the product. Yuyao Cili Machinery Co., Ltd., equipped with advanced cold forming equipment, can produce stainless steel screws of various specifications and shapes according to the specific needs of customers.

4. Thread rolling
The thread is an important part of the screw. The precision and strength of the thread directly determine the tightening effect of the screw. We use thread rolling technology to process the thread part of the stainless steel screw. Compared with the traditional thread cutting process, thread rolling is a cold processing technology that does not cut off the material, but presses the metal surface into a thread shape through a rolling die.
Rolling thread has the following advantages:
Improve thread strength: The rolling process changes the grain structure of the metal during the pressing process, increases the surface hardness of the thread, and makes the screw have higher strength and wear resistance during use.
Improve surface finish: The thread surface after rolling is smoother, which reduces friction, makes the screw smoother when screwed in, and reduces wear during use.
Higher processing efficiency: Compared with traditional thread cutting, rolling process is faster and suitable for mass production, ensuring efficient supply of products.

5. Surface treatment
Although stainless steel material itself has good corrosion resistance, in some special application scenarios, further surface treatment can provide additional protection for screws. Yuyao Cili Machinery Co., Ltd., the common surface treatment processes used include:
Electroplating: Through the electroplating process, a metal protective layer such as zinc, nickel, etc. is formed on the surface of stainless steel screws to improve its corrosion resistance.
Passivation treatment: Passivation is to form an oxide film on the surface of stainless steel by chemical methods, further enhancing the rust resistance of stainless steel screws and extending their service life.
Spraying: For some screws with special requirements, we can also spray coating on the surface to improve corrosion resistance and aesthetics.

6. Heat treatment
In some application scenarios with high strength requirements, stainless steel screws also need to undergo heat treatment. By heating to a specific temperature and cooling quickly, the screws can obtain higher hardness and strength to meet the use requirements in extreme environments.

Yuyao Cili Machinery Co., Ltd., with advanced production equipment and efficient manufacturing processes, also relies on years of technical experience to provide high-quality stainless steel screws to customers around the world. Through a full set of processing processes from raw material selection, annealing, cold forming, thread rolling to surface treatment, we can ensure that each screw reaches the best state in strength, durability and appearance. We will continue to be committed to technological innovation and process improvement to provide customers with more diversified and higher quality product solutions.