一、概况标点机是检测金属材料塑性指标延伸率(δ)的必要设备。如果它的刻度误差越小,则所测定的金属延伸率(δ)就越准确。而它的准确性越高,就越能反映钢材的真实塑性,给设计部门提供可靠的设计依据。因此,测定金属延伸率,对于生产部门是不可缺少的一环。它对合理使用钢材,保证产品质量,是相当重要的。 First, the overview Punctuality is the detection of plastic elongation of metal materials (δ) of the necessary equipment. The smaller the scale error is, the more accurate is the measured metal elongation (δ). And its higher accuracy, the more it can reflect the true plasticity of steel, to provide reliable design basis for the design department. Therefore, the determination of metal elongation, for the production sector is an indispensable part. It is very important to the rational use of steel to ensure product quality.