Cast iron surface plates are planar reference measuring tools used for workpiece and equipment inspection, marking, assembly, welding, and other tasks. Their overall structure is primarily box-type and ribbed-plate type, with working surfaces that can be rectangular, square, or circular. The material is HT200-300 high-strength cast iron, with a working surface hardness of HB160–210.
The overall structure of cast iron surface plates is mainly box-type and ribbed-plate type, with working surfaces available in rectangular, square, or circular shapes. The material is HT200-300, and based on machining precision, they are divided into two types: fine planing and scraping processes. The surface of the plate can be machined with V-grooves, T-slots, U-slots, dovetail slots, round holes, elongated holes, etc. It serves as a planar reference measuring tool for workpiece and equipment inspection, marking, assembly, welding, assembly, and riveting.
After wear and tear from use, cast iron surface plates can be recalibrated or scraped to restore their accuracy. With proper use, cast iron surface plates can last up to thirty years. Cast iron surface plates can also be used to inspect the flatness of parts using the spotting method, offering advantages such as accuracy, intuitiveness, and convenience. On a scraped surface plate, pushing a gauge stand or workpiece is smooth without any sticking sensation, facilitating measurement and ensuring accuracy. The quality of the cast iron and heat treatment of the surface plate significantly impact its performance: residual stress may cause deformation of the working surface; poor wear resistance may prevent maintaining accuracy; or difficulty in scraping may result in inadequate surface roughness. Therefore, when using cast iron surface plates, attention must be paid to the selection of pig iron materials and methods such as aging treatment to eliminate residual stress.
Secrets to Extending the Lifespan of Cast Iron Surface Plates:
1. To prevent deformation of the cast iron surface plate, when hoisting it, use four steel cables of the same length to simultaneously attach to the four lifting holes on the plate, ensuring it is lifted steadily onto the transport vehicle.
2. Properly support and level the cast iron surface plate with墊塊 (support points), ensuring each support point bears weight evenly and the entire plate remains stable.
3. During installation, use adjustable shims to墊好 and secure each support point of the cast iron surface plate. A professional technician should adjust the plate to meet the required accuracy.
4. When using the cast iron surface plate, handle workpieces gently and avoid moving rough workpieces on the plate to prevent impacts, scratches, or other damage to the working surface.
5. To prevent overall deformation of the cast iron surface plate, remove workpieces after use to avoid prolonged pressure that could cause deformation.
6. When the cast iron surface plate is not in use, promptly clean the working surface, apply a layer of anti-rust oil, cover it with anti-rust paper, and use the plate's outer packaging to protect it from accidental damage.
7. Install the cast iron surface plate in a well-ventilated, dry environment, away from heat sources, corrosive gases, and corrosive liquids.
8. Perform regular periodic inspections of the cast iron surface plate according to national standards, with calibration cycles ranging from 6 to 12 months depending on specific conditions. Packaging: Available in both iron plate and wooden packaging. The surface of the plate is sealed with plastic film, suitable for inland transport, providing good protection against moisture, shock, rust, and rough handling to ensure safe delivery to the site.
Transportation of Cast Iron: Transportation is a critical factor in ensuring the plate does not deform. Therefore, when transporting the plate, avoid overloading, speeding, fatigued driving, and transporting under adverse weather conditions.