HRM-45型手动表面洛氏硬度计是一种普及型的，专门用于测试金属材料表面硬度的洛氏硬度计。本机采用机械式手动加载操作，无电器装置。具有操作简便，压痕微小，精度高等特点。适用范围
表面淬火钢，铜、铝合金薄板，带钢,硬质合金钢，镀锌，镀铬，镀锡，材料表面热处理和化学表面处理的各种金属材料。HR-45M Manual Superficial Rockwell Hardness Tester adopts mechanical and manual testing method, without electrical device. With simple appearance, it uses as popular type Rockwell Hardness testing instrument.Usage Range:
Surface hardened steel, copper, aluminum alloy sheet, hard alloy steel, zinc layers, chrome layers, tin layers, surface heat treating and chemical treating materials, etc.
技术数据（Technical Specifications）洛氏标尺(Rockwell Scales) HR15N, HR30N, HR45N, HR15T, HR30T, HR45T 初试验力（Initial Testing Force）3Kg (29.42N)试验力（All Testing Force）15Kg (147.1N), 30Kg (294.2N), 45Kg (441.3N)硬度读取(Indication of Hardness Value)表盘式（Dial ）试件最大高度Max. Height of Specimen170mm仪器尺寸(Overall Dimension)520X240X700MM  (长X宽X高, LXWXH)仪器重量(Net Weight)80 Kg执行标准 (Carried Standard)GB/T230.2 国家标准、JJG112检定规程GB/T230.2 Chinese Standard and JJG112 Inspection Rule标准配件、附件(Standard Accessories)金刚石洛氏压头，直径1.5875mm硬质合金球压头，大平试台、中平试台、V型试台，硬度块Diamond Rockwell Indenter, Diameter 1.5875mm Hard Alloy Steel Ball Indenter, Large Testing Table , Medium Testing Table and V-shaped Testing Table, HRC and HRB Hardness Blocks