Steel Wire Wound UHMWPE Composite Pipe
cross helically wound steel wires reinforced ultra-high molecular weight polyethylene composite wear-resistant pipe(SRUP)is a composite pipe formed by taking the ultra-high molecular weight polyethylene (UHMWPE) inner pipe as the matrix,using the high-strength steel wire wrapped with adhesive resin as thereinforcementand the high-strength polyethylene as the protective layer. The matrixreinforcement and protective layer are tightly connected with adhesive resinand are formed by melting composite.
Steel Wire Wound Uhmwpe Composite Pipe,Steel Mesh Skeleton Pe Pipe,Ultra High Polymer Pipe,Steel Mesh Skeleton Composite Pipe SHANDONG EASTERN PIPE CO., LTD. , https://www.dfuhmwpe.com
Advanced measuring equipment in high-precision body manufacturing
Creating a high-quality car body is the most direct reflection of a vehicle’s design and manufacturing excellence. A highly precise body-in-white (BIW) not only ensures an attractive exterior but also significantly reduces labor time during production. In the 1980s, Japanese automakers successfully entered the European and American markets by leveraging fuel-efficient engines and visually appealing designs. Today, Dongfeng Honda is focused on developing a 1mm-level BIW, which highlights the importance of precision in modern automotive manufacturing.
To achieve such high standards, advanced and reliable **measuring** tools are essential. A three-coordinate **measuring** system has become a critical part of the production process, enabling accurate inspections and ensuring consistent quality. The author discusses how **coordinate measuring machines (CMMs)** play a vital role in various stages, including equipment installation, fixture calibration, daily analysis, and maintaining the stability of the body during production.
**Laser Tracker**
The accuracy and stability of production line equipment have a major impact on the precision of the vehicle body and the efficiency of mass production. Adjusting the equipment to match specific vehicle fixtures is crucial for maintaining consistency. One key step is leveling the equipment base. Traditional methods rely on bubble levels, which are limited in accuracy and require skilled operators. This can lead to longer setup times and potential errors.
In contrast, the Leica AT901 series laser tracker offers a more efficient and accurate solution. It allows two **surveyors** and one worker to complete the base leveling in a fraction of the time. With a precision of ±0.05mm, it compensates for temperature changes and material differences, ensuring high repeatability. When adjusting large welding fixtures, the laser tracker enables full-system adjustments within the same coordinate framework, improving both speed and accuracy.
**Key Features of Laser Trackers:**
1. **Wide Measuring Range and Ease of Use:** With a range of up to 160 meters, laser trackers can measure both large-scale structures and small components with micron-level precision. Operators can use a handheld mirror or wireless sensors to perform real-time measurements and detect deviations quickly.
2. **Stable Performance and High Precision:** Utilizing ADM (absolute distance measurement) and IFM (interferometry) technologies, laser trackers deliver reliable and redundant data, ensuring consistent results even in challenging environments.
3. **Compact and Portable Design:** Weighing only 22kg and measuring 620mm in length, these devices are easy to handle and install, making them ideal for on-site applications.
In summary, laser trackers provide a fast, accurate, and reliable method for detecting and assembling automotive production lines. Their real-time capabilities allow for continuous inspection during assembly, ensuring tooling and fixtures meet strict tolerances and maintain long-term reliability.
**Portable Coordinate Measuring Instruments**
Portable CMMs offer flexibility, speed, and high precision, making them suitable for a wide range of applications—from small parts to large fixtures. They can be used to analyze the condition of components, sub-assemblies, and fully assembled vehicles. By scanning and comparing measured coordinates to theoretical values, they help identify and correct deviations, improving overall body accuracy.
In the welding workshop, where environmental conditions are harsh and fixtures are frequently adjusted, regular **measuring** and maintenance are essential. While large fixtures often require laser trackers, smaller ones benefit from portable multi-joint CMMs, which balance cost and performance. These instruments not only detect hole positions but also scan part shapes, helping technicians identify defects and root causes efficiently.
**Fully Automatic Movable Double-Arm CMM**
Automotive production demands consistent quality, and the DEA PRIMA fully automatic double-arm CMM plays a key role in this. It automatically measures critical points of the vehicle body based on pre-programmed instructions, significantly increasing **measuring** speed and data reliability. However, due to its sensitivity to environmental factors like temperature and vibration, it must be placed in a dedicated **measuring** room, limiting it to offline operations.
By analyzing data trends, this system helps monitor key quality parameters in real time, identifying potential issues before they escalate. This proactive approach minimizes non-conforming products and ensures stable production quality.
**Online Testing Equipment Application**
1. **Laser Online Detection System**
In body-in-white (BIW) manufacturing, controlling welding accuracy is crucial. Traditional **measuring** methods involved periodic sampling, which was time-consuming and less effective. Since 2009, the company has implemented a laser online detection system that monitors key points in real time, greatly improving the accuracy of BIW assembly and reducing quality risks.
Although this technology is powerful, challenges like vibration and dust can interfere with **measuring** accuracy. Therefore, data filtering is often required to ensure reliable results.
2. **Laser Profile Gap and Step Difference Measuring Equipment**
To enhance surface quality, the company uses Axalt’s laser profile gap and step difference **measuring** equipment. Combined with wireless scanners and LGWorksRT software, it quickly collects large datasets, identifies quality issues, and improves overall product consistency. This system simplifies the **measuring** process, reduces human error, and supports better decision-making.
**Conclusion**
Building a high-precision car body is a complex, multi-step process that requires attention to every detail, from equipment setup to final assembly. In China’s automotive industry, where overall standards are still evolving, achieving such precision is no small task. By using advanced **measuring** tools and techniques, manufacturers can overcome challenges and produce high-quality vehicles. Selecting the right equipment based on specific needs and application scenarios is essential for improving both the accuracy and appearance of domestic automobiles.