河北北重铸铁平台生产厂家，铸造铸铁平台价格
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.
铸铁平台材质: 材料为高强度铸铁HT200-250工作面硬度为HB160—210。经过两次处理(人工退火600度----700度或自然时效2---3 年)，使该产品的精度稳定，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 temperature600℃to700℃or
2-3 years natural aging) the internal stress was totally eliminated, so the
surface plate have stable accuracy and good wear-resisting performance.
铸铁平台精度：按国家标准计量检定规程执行，分别为0，1，2，3级四个级别
The Cast Iron Surface Plate
can be classified as Grade 0,1,2,3,4 according to the national standard
metrological verification procedures
铸铁平台退火种类常见的T型槽铸铁平台[2]退火工艺有：再结晶铸铁平台退火，去应力铸铁平台退火，球化铸铁平台退火，完全铸铁平台退火等。铸铁平台退火的目的：主要是降低金属材料的硬度，提高塑性，以利切削加工或压力加工，减少残余应力，提高组织和成分的均匀化，或为后道热处理作好组织准备等。
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.