Inspection surface plate is used as the datum for measurement of the machinery parts’ geometric tolerance,such as flatness, parallelism, straightness and more. It is also can be used for precision inspection, marking out (layout), and tooling setup.

鑄鐵平臺(tái)材質(zhì): 材料為高強(qiáng)度鑄鐵HT200-250工作面硬度為HB160—210。經(jīng)過兩次處理(人工退火600度----700度或自然時(shí)效2---3 年)，使該產(chǎn)品的精度穩(wěn)定，耐磨性能好。

The material of Cast Iron Inspection Plate is high-strength cast iron Ht200-250 and the hardness of the working surface is HB 160-210. After artificial heat aging treatment( Artificial annealing temperature 600℃ to 700℃or 2-3 years natural aging) the internal stress was totally eliminated, so the surface plate have stable accuracy and good wear-resisting performance.

鑄鐵平臺(tái)精度：按國家標(biāo)準(zhǔn)計(jì)量檢定規(guī)程執(zhí)行，分別為0，1，2，3級(jí)四個(gè)級(jí)別

The Cast Iron Surface Plate can be classified as Grade 0,1,2,3,4 according to the national standard metrological verification procedures

鑄鐵平臺(tái)退火種類常見的T型槽鑄鐵平臺(tái)[2]退火工藝有：再結(jié)晶鑄鐵平臺(tái)退火，去應(yīng)力鑄鐵平臺(tái)退火，球化鑄鐵平臺(tái)退火，完全鑄鐵平臺(tái)退火等。鑄鐵平臺(tái)退火的目的：主要是降低金屬材料的硬度，提高塑性，以利切削加工或壓力加工，減少殘余應(yīng)力，提高組織和成分的均勻化，或?yàn)楹蟮罒崽幚碜骱媒M織準(zhǔn)備等。

There are many annealing type for Cast Iron Surface Plate, such as stress relief annealing, recrystallization annealing, spheroidizing annealing, full annealing, etc. The purpose of annealing process is to reduce the hardness of metal materials, to improve the plasticity, contributing to cutting and pressure machining process. It also can reduce the residual stress, improve the organization and composition of the homogenization.