Cast iron scribing platform

The Cast iron scribing platform is a basic measuring tool used for marking and positioning workpieces in mechanical processing. It is made of high-quality gray cast iron HT200-HT300 as raw material, and is cast by sand casting or resin sand casting. The internal stress of the casting is eliminated through natural aging (2-3 years) or artificial aging process, ensuring that the platform is not easily deformed during long-term use and guaranteeing the stability of marking accuracy.

The platform surface undergoes precision machining such as milling and grinding, with strict control of flatness errors: platforms with specifications ≤ 1000 × 1000mm ≤ 0.05mm, platforms with specifications ≤ 1000 × 2000mm ≤ 0.08mm, surface roughness Ra value ≤ 3.2 μ m, and uniformly distributed T-shaped grooves or positioning holes for easy fixation of workpieces, meeting the marking requirements of workpieces of different sizes. Its structure is mostly box shaped, with a criss crossing rib design at the bottom, which not only enhances overall rigidity but also reduces self weight, with a load-bearing capacity of up to 600kg/m ², suitable for various small and medium-sized workpiece operations.

Widely applicable scenarios, commonly used for planar and three-dimensional marking of parts in mechanical manufacturing, which can mark the machining boundaries, hole center, etc. of the workpiece, providing accurate benchmarks for subsequent cutting processes; It can also serve as a positioning platform during workpiece assembly to ensure accurate installation of components. When using, the platform should be placed on a flat foundation and leveled with adjustable bolts at the bottom (level to detect the center of bubbles). After fixing the workpiece, gently scratch and place it to avoid excessive force that may damage the platform surface or cause displacement of the workpiece.

Daily maintenance should pay attention to: clean the surface iron filings and oil stains in a timely manner after marking, and wipe them with cotton yarn dipped in engine oil; Avoid direct impact of sharp tools on the surface to prevent dents; When not in use for a long time, apply anti rust oil and cover with waterproof canvas to prevent moisture. Under standardized use, the service life can reach 8-10 years, making it an indispensable basic equipment in mechanical processing workshops.

Technical Parameter：

Note:1. The values in the table are given according to the standard temperature of 20 ℃.2. In the formula in the table: D ---- diagonal length of flat plate working face, mm.3. The flatness tolerance within the range of 0.02A (maximum 20mm) from the edge of the working face is not counted, and any point shall not be higher than the working face.