PVD Gold Silver Plating Lathe Machining Parts Jewellery watche cases CNC machining

PVD Gold Silver Plating Lathe Machining Parts Jewellery watche cases CNC machining

Product Description:

Hex Bolts: Applications and Advantages

Hex bolts are widely used across various industries and products due to their simple design, high strength, and ease of installation. Below are some key applications and advantages of hex bolts:

Industries and Products That Use Hex Bolts

1. Construction Industry
- Hex bolts are commonly used in structural steel connections, such as bridges, building frameworks, and scaffolding. Their ability to handle heavy loads and external forces like wind ensures stability and durability in construction projects.

2. Machinery Manufacturing
- In machinery and equipment assembly, hex bolts are essential for fastening mechanical parts in machinery such as lathes, heavy-duty equipment, and assembly lines. Their high strength and durability make them suitable for machines operating under vibration and heavy loads.

3. Automotive and Transportation
- Hex bolts are widely used in the automotive industry for securing critical parts like chassis, engines, and transmission systems. Their strength and reliability help maintain the vehicle's integrity under high-speed and heavy-duty conditions.

4. Home Appliances and Electronics
- Hex bolts are used to assemble and secure parts in appliances such as air conditioners, washing machines, and televisions. They provide reliable connections and ensure the overall stability of the products.

5. Energy and Petrochemical Industry
- Hex bolts are crucial in wind turbines, nuclear power plants, and petrochemical plants, where they are used in securing large equipment and pipeline systems. Their corrosion resistance and strength allow them to perform in harsh environments.

6. Marine and Offshore Engineering
- In shipbuilding and offshore platforms, hex bolts are used to secure deck fittings, hulls, and equipment. Stainless steel hex bolts, in particular, resist corrosion from seawater, ensuring the longevity of marine structures.

7. Furniture Manufacturing
-Hex bolts are frequently used in the assembly of furniture such as beds, tables, chairs, and cabinets. Their easy installation and firm fastening provide stability and long-term durability to household and office furniture.

Applications

PVD can plate CrN. TiN. TiAlCN. TiCN. TiAlN on stainless steel, copper, titanium Zinc-aluminium alloys and other metals. Common colours that can be plated are: gold, brass, rose gold, silver-white, black, smoky grey, purple-bronze, brown, violet, blue, burgundy, antique bronze, and so on, and we are able to provide the required colours and qualities according to your requirements.

Decorative Plating
Background: Decorative plating is used on a wide range of products such as jewellery, watches, mobile phone cases and automotive accessories to enhance their appearance and durability.
CASE STUDY: A gradient colour coating from gold to blue was applied to watch bands and cases using titanium targets via PVD technology. This application not only enhances the aesthetics of the product, but also provides additional wear and corrosion resistance, extending the life of the product.

Corrosion Resistant Plating
Background: In industries such as aerospace, automotive and offshore, anti-corrosion plating is essential to protect metal parts from corrosion and environmental attack.
Case Study: PVD coatings prepared using titanium aluminium (TiAl) alloy targets are used for aircraft engine parts. The coatings not only provide an attractive grey to purple appearance, but also significantly improve the corrosion and temperature resistance of the parts, thus enhancing the reliability and life of the entire engine.
Wear Resistant Coatings
Background: Wear-resistant coatings are critical to improving the durability and performance of tools, moulds and mechanical components, especially in demanding industrial applications.
Case Study: A black wear-resistant coating was applied to a cutting tool by PVD using a silicon nitride (Si3N4) target. The coating significantly improves the hardness and wear resistance of the tool, resulting in improved machining efficiency and tool life, and reduced production costs.

1. Coating composition
The chemical composition of the coating material also plays a vital role in determining colour.

Different elements and compounds have unique optical properties that affect their interaction with light.

By varying the composition, various colours can be obtained.

For example, the addition of nitrogen produces a nitride coating, which is harder and can take on different colours compared to oxide coatings.

2. Coating Thickness
The thickness of the PVD coating directly affects the colour.

Thicker coatings absorb more light and therefore may be darker in colour, while thinner coatings reflect more light and therefore may be lighter in colour.

This property allows the colour to be fine-tuned during the PVD process by adjusting the deposition time and other parameters.

3. Environmentally Friendly
PVD is considered an environmentally friendly process compared to alternative processes such as electroplating and painting.

It does not emit harmful gases or waste products, making it a sustainable industrial option.

In addition, the process does not affect the recyclability of the coating material, which is beneficial from an environmental point of view.

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