The Cast Iron Surface Plate is also called Working Platform(working plate),Worktable. The material is HT200-300
The basic structure of Cast Iron Surface Plate (worktables) is divided into two types: box type and ribbed type. According to the precision machining, It’s divided into finish plane and scraping.
The shape of working surface is rectangle, square or round. Slots can be made in several types like V-Slots, T-Slots, U-Slots, dovetail slots, round holes, slotted holes etc. The working surface hardness is between HB160 and HB 210.
There are two tempering treatment (artificial annealing (seasoning):600 to 700 centigree, natural seasoning: 2 to 3 years to keep the plates’ stability and abrasion resistance. According to national standard metrological verification regulation, the accuracy class of plates are divided into “0”grade,”Ⅰ”grade,“Ⅱ”grade,“Ⅲ”grade.
| specification (mm) | precision grade (um) | ||||
| 0 | 1 | 2 | 3 | Refined Shaver | |
| 200×100 | 5 | 10 | 20 | ||
| 200×200 | 5 | 10 | 20 | ||
| 250×250 | 5.5 | 11 | 22 | ||
| 300×200 | 6 | 12 | 24 | ||
| 300×300 | 6 | 12 | 24 | ||
| 300×400 | 6 | 12 | 24 | ||
| 400×400 | 6 | 12 | 24 | ||
| 500×300 | 6 | 12 | 24 | ||
| 500×350 | 6 | 12 | 24 | ||
| 500×450 | 6 | 12 | 24 | ||
| 500×500 | 7 | 14 | 28 | ||
| 600×450 | 7 | 14 | 28 | ||
| 500×600 | 7 | 14 | 28 | ||
| 700×500 | 8 | 16 | 32 | 80 | |
| 800×500 | 8 | 16 | 32 | 80 | |
| 800×600 | 8 | 16 | 32 | 80 | |
| 900×600 | 8 | 16 | 32 | 80 | |
| 1000×750 | 9 | 18 | 36 | 90 | |
| 1000×800 | 9 | 18 | 36 | 90 | |
| 1000×1000 | 10 | 20 | 39 | 96 | |
| 1200×800 | 20 | 39 | 96 | ||
| 1000×1200 | 20 | 39 | 96 | ||
| 1000×1500 | 24 | 48 | 120 | ||
| 1500×1500 | 25 | 50 | 125 | ||
| 2000×600 | 24 | 48 | 120 | ||
| 2000×1000 | 26 | 52 | 129 | ||
| 2000×1500 | 56 | 140 | |||
| 2000×2000 | 60 | 152 | 230 | ||
| 2500×1500 | 64 | 152 | 230 | ||
| 2500×2000 | 68 | 168 | 248 | ||
| 2500×2500 | 72 | 180 | 270 | ||