China Shenzhen Perfect Precision Product Co., Ltd. company news

What does the program name mean? The name or designation of a program consists of the degree (e.g., BS) and the subject or area of study (e.g., Business Administration). It is also called an academic plan, degree plan or course plan. A topic is a collection of topics that form a coherent whole and is intended to be taught by teachers.

What are the SEVIS ID and Project Number? Your SEVIS ID - The SEVIS ID is a 9-digit number starting with "N" and is located in the upper right corner of the form. The university’s school code or program number—F-1 school code is found in Section 2 of the I-20; J-1 program number is found in Section 2 of the DS-2019.

What is a casting? Casting is a manufacturing process used to form the desired object or part by pouring molten material (usually a metal or alloy) into a mold, allowing it to cool and solidify. This process is very common in manufacturing because it allows the production of parts of a variety of different shapes and sizes, including complex geometries that may be more difficult to achieve with other machining methods. Here are some key features and uses for castings: 1. Mold: Making a casting usually requires a mold or cavity, the internal shape of which determines the shape of the final casting. Molds can be made of metal, ceramic, plaster or other materials, depending on the production materials and parts required. 2. Melting material: Castings usually use metal or metal alloys as the melting material, but other materials, such as plastics, can also be used. These materials are melted at high temperatures and poured into molds. 3. Solidification process: Once the molten material is poured into the mold, it will cool and solidify in the mold, gradually solidifying into the desired shape. This solidification process usually requires control of temperature and cooling rate to ensure desired properties and quality. 4. Material diversity: Castings can be used to produce a variety of materials, including metals such as iron, aluminum, brass, copper, zinc, magnesium, stainless steel, and non-metallic materials such as plastics and ceramics. 5. Widely used: Castings are widely used in automobile manufacturing, aerospace, machinery manufacturing, construction, electronics, medical equipment, industrial equipment and many other fields. They are used in the manufacture of engine parts, pipes, valves, parts, tools, fixtures, art and many other products. 6. Economy: Casting is usually a relatively economical production process because it can produce the same or similar parts in large quantities and reduce production costs. The manufacturing process of castings can be optimized many times according to specific requirements and materials to obtain the best performance and quality. This makes casting an important process in the manufacturing industry, used to produce a variety of products and parts.

What is a rod? "Rod" is a term widely used in the manufacturing and construction fields, usually referring to the cylindrical rod-like form of the material. These materials can be metal, plastic, wood, or other synthetic materials, and specific uses vary by material type and industry. Here are some common rod types and applications: 1. Metal rods: Metal rods are usually used in machinery manufacturing, construction and making parts. Common metals include steel, aluminum, copper, brass and stainless steel. The rounded cross-sections of these materials make them easy to machine, cut and weld. 2. Steel rod: A steel rod is a common metal rod that can be used to manufacture mechanical parts, building structures and support rods. 3. Aluminum rods: Aluminum rods are commonly used in lightweight designs such as aerospace, automobile manufacturing, and bicycle frames. 4. Plastic rods: Plastic rods are used to make parts, partitions, insulation materials, etc. Different types of plastic rods have different properties, such as polypropylene, polyvinyl chloride (PVC), polytetrafluoroethylene (PTFE), etc. 5. Fiberglass rods: Fiberglass rods are usually used to strengthen plastic products to increase their strength and stiffness. 6. Wooden rods for construction: In construction projects, wooden rods are usually used for support and structure, such as supporting formwork, frames, furniture, etc. 7. Plastic Products: Plastic rods are also used in manufacturing furniture, fixtures, signage, toys and various other plastic products. The diameter and length of rods can be customized to suit specific needs, and they often play a key role in the construction and manufacturing processes, providing support, structure and materials for part manufacturing. Selecting the appropriate type and size of rod is important to the success of a specific application.

What is a program number? The program number allows remote program execution. The first implementation of a program is usually version number 1. Program numbers are assigned in groups 0x20000000 (decimal 536870912) according to the following list: Project. describe.

Automotive accessories have various requirements that depend on the specific type of accessory and its use in the car. Generally speaking, however, here are some key requirements that auto parts typically need to meet: 1. Durability and reliability: Auto parts must have excellent durability and reliability as they will withstand various challenging environments and loads throughout the life of the vehicle. 2. Safety: Many auto parts are directly related to the safety performance of the vehicle, such as braking systems, suspension systems, airbags, etc. Therefore, they must comply with strict safety standards and regulations. 3. Performance: Auto parts must have good performance to ensure vehicle performance and handling. For example, engine parts must provide efficient power, and suspension systems must provide smooth suspension. 4. Comply with emission standards: Automobile parts, especially emission-related parts, must comply with environmental regulations to reduce tail gas emissions and impact on the environment. 5. Material selection: Proper material selection is crucial for different types of auto parts. For example, engine components often use high-temperature alloys, and braking systems use high-performance ceramic materials. 6. Economy: Automobile manufacturers usually pursue economy, so auto parts must be competitive in terms of cost-effectiveness. 7. Ease of installation and maintenance: Auto parts should be designed with ease of installation and maintenance in mind. This reduces repair time and costs. 8. Lightweight design: In order to improve fuel efficiency and reduce exhaust emissions, many car manufacturers pursue lightweight design, which requires materials and designs that are lightweight but strong enough. 9. Traceability: Automakers often require the ability to trace the origin and manufacturing records of accessories to ensure quality and safety. 10. Comply with regulations: Auto parts must comply with various national and regional regulations and standards, including crash tests, emission standards, safety standards, etc. Different types of auto parts may have specific requirements. For example, brake system parts need to meet braking performance and wear resistance requirements, while engine parts need to meet the requirements of high-temperature and high-pressure environments. In summary, the requirements for automotive accessories are very diverse and need to be considered based on specific applications and functions.

Requirements for aerospace accessories? Aerospace accessories have very high quality and performance requirements because they must operate in extreme environments to ensure flight safety and reliable performance. Here are some of the key requirements that aerospace accessories typically need to meet: 1. Material selection: Materials for aerospace accessories must have excellent strength, lightweight and resistance to extreme environments such as high temperature and low temperature. Commonly used materials include high-strength aluminum alloys, titanium alloys, nickel-based alloys and composite materials. 2. Precision processing: Accessories require high-precision processing, including precision milling, drilling, grinding and threading. Process control and quality assurance are critical to ensuring precision. 3. Fatigue resistance: Accessories must have excellent fatigue resistance because they will operate under multiple cyclic loads. This requires high strength and durability of the material. 4. Corrosion resistance: Aerospace accessories often face the risk of corrosion, especially in marine environments or chemical environments. Therefore, the material must have good corrosion resistance. 5. Heat treatment: Some accessories require specific heat treatment processes to improve their strength and hardness. This usually includes quenching, tempering and aging treatments. 6. Lightweight design: The aerospace industry pursues lightweight design to reduce fuel consumption and improve performance. Therefore, the design of aerospace accessories usually focuses on lightweight and structural optimization. 7. Traceability: The production of aerospace accessories must have a high degree of traceability to ensure quality and safety. Each part must be traceable to its production and inspection records. 8. Comply with regulations: The aerospace industry is governed by strict regulations and standards, so accessories must comply with applicable regulations and standards, such as FAA (Federal Aviation Administration) certification. 9. High-temperature resistance: Some aerospace applications require high-temperature resistance, so accessories must be able to work in high-temperature environments, including rocket engine parts, etc. 10. Reliability and safety: The aerospace industry has extremely high requirements for the reliability and safety of accessories, because failure may lead to serious accidents. Therefore, accessories must undergo rigorous testing and inspection. In summary, the requirements for aerospace accessories are very stringent as they must work under extreme conditions and ensure flight safety and reliable performance. This requires high-quality materials, precision machining, quality control and regulatory-compliant production processes.

What is tempering? Tempering is a heat treatment process usually used to change the mechanical properties and organizational structure of metal alloys. This process involves heating a metal alloy to a certain temperature and then cooling and controlling the temperature in different ways to improve its properties. Tempering is mainly used in the following situations: 1. Reduce hardness: Metal alloys usually undergo a sharp increase in hardness after heat treatment processes such as quenching. By tempering, the hardness can be reduced, making the material easier to work and more tough. 2. Eliminate internal stress: Tempering helps eliminate internal stress introduced by processes such as quenching, thereby improving the stability and durability of metal parts. 3. Improved toughness: Metal alloys generally have better toughness after tempering, especially at low temperatures. This is important for some applications, such as the aerospace and nuclear industries. 4. Improve strength: By controlling the temperature and time of the tempering process, different levels of strength improvement can be achieved. Some alloys can still maintain relatively high strength after tempering. The key to the tempering process is temperature control and time control. Different metal alloys and applications require different tempering conditions. Typically, the tempering temperature is below the critical temperature of the metal, but high enough to change its properties. Tempering time is usually adjusted based on the desired effect. Tempering is one of the important processes in metal processing and heat treatment, allowing engineers and manufacturers to tailor the properties of materials to meet specific application requirements. Different types of metal alloys and parts may require different types of tempering processes, so the tempering process needs to be carefully controlled and monitored.

What is Aluminum 2017? Aluminum 2017 is a high-strength aluminum alloy with excellent mechanical properties, especially suitable for high-performance machine parts and aerospace applications. Here are some key features of Aluminum 2017: 1. High strength: Aluminum 2017 alloy has very high tensile strength and excellent mechanical properties, usually in T4 or T451 temper. This makes it an ideal material for manufacturing parts requiring high strength. 2. Wear resistance: Aluminum 2017 alloy has good wear resistance under high pressure, so it is often used to manufacture mechanical parts that require wear resistance. 3. Fatigue resistance: Aluminum 2017 alloy has good fatigue resistance, which makes it suitable for applications subject to repeated loads, such as aircraft parts. 4. Processability: Aluminum 2017 alloy has excellent processing properties, including cutting, milling and drilling, which makes it suitable for precision machining. 5. Heat treatability: Aluminum 2017 alloy can improve its strength and hardness through heat treatment. Typically, it is heat treated to T4 or T451 conditions for optimal performance. 6. Aerospace applications: Aluminum 2017 alloy is widely used in aerospace applications, including aircraft structures, engine parts, flight control components and other key parts. 7. Corrosion resistance: Although stainless steel is better in corrosion resistance, aluminum 2017 alloy still has a certain corrosion resistance, especially in dry environments. Aluminum 2017 alloy is a high-performance material suitable for applications requiring high strength and anti-wear properties. It is widely used in the aerospace, automotive, marine and mechanical engineering sectors, especially in projects requiring lightweight design.

What is aluminum 7050? Aluminum 7050 is a high-strength aluminum alloy commonly used to manufacture parts and structures that require high strength and crack resistance. Here are some key features of Aluminum 7050: 1. High strength: Aluminum 7050 alloy has excellent strength, especially in the T6 state. It is commonly used in applications requiring high strength, such as aircraft fuselage structures and spacecraft. 2. Crack resistance: Aluminum 7050 alloy has excellent crack resistance, which is very important for applications subject to repeated loads, such as aircraft parts. 3. Lightweight: Aluminum is a lightweight metal, so aluminum 7050 alloy provides high strength while still maintaining a relatively low density. This helps reduce overall weight, critical for aerospace and high-performance machinery applications. 4. Heat treatability: Aluminum 7050 alloy can improve its strength and hardness through heat treatment. Typically, it is heat treated to T6 condition for optimal performance. 5. Aerospace applications: Aluminum 7050 is widely used in aircraft fuselage structures, wings, flight control components, landing gear and other key parts. It is also widely used in the aerospace field. 6. Corrosion resistance: Although stainless steel is better in corrosion resistance, aluminum 7050 alloy still has a certain corrosion resistance, especially in dry environments. Aluminum 7050 alloy is commonly used in applications requiring high strength and lightweight design, especially in the aerospace sector. It is an excellent material that can meet stringent performance requirements while reducing overall weight, and improving fuel efficiency and flight performance.