QHQ-A 便携式铅笔法硬度计

Hualong (Tianjin) test equipment manufacturing Co., Ltd. is located in Tianjin high-tech core area, is a professional engaged in railway highway, bridge, testing equipment research and development, production and sales of high-tech enterprises. Since its inception, after many years of development, has in the field of test instruments established good reputation, the company pays attention to lay a solid foundation for strength, attract a group of professional management, market and technical personnel, establish a modern enterprise management system, to talent oriented, integrity management, market-oriented, rely on Science and technology, to win the sustainable development as the basis for cooperation, lead the way in the laboratory equipment supply market, to the modernization, specialization, standardization and scale direction forward.

In recent years we to "pay attention to user needs to provide maximum convenience" as the enterprise mission, to broaden the scope of services, in addition to providing traditional railway highway bridge building materials testing instrument, for users provide supporting the supply of the full set of laboratory configuration scheme and test instrument, for users to build various Laboratory of choose and buy, use and complete after-sales service station.

Hualong (Tianjin) test equipment manufacturing Co., Ltd. welcome new and old customers to visit. Welcome to the industry to participate in the development of us.

    涂膜硬度是涂料制造、涂料使用（涂表）行业进行质量认定的必测指标。铅笔划痕法测试涂膜硬度是自八十年代以来被普遍采用的测试方法。我国也已在涂料的发展研究和工业生产中推广这种测试方法。本仪器是根据标准“涂膜硬度铅笔测定法”《GB6379-86》第2、3条手工操作法而设计制造的。仪器即可在实验室使用，也可适用于施工现场，并能在任意方向上对涂膜硬度进行鉴定。

二．结构及工作原理

    仪器为机械式，三点接触被测表面（二点为轮，一点为铅芯）始终保证铅笔与被测表面形成45°夹角，用力水平推动仪器运动，即可完成测试过程，测定涂膜抵抗变形的能力。

三．使用要求

1．GB1279-79《漆膜一般制备法》制备验件三块，一般为平滑马口铁板120*50*（O.2-0.3）mm，

   或产品另行规定的底材及尺寸。

2．试验条件：按产品标准规定或施工要求的条件进行。

四．使用方法：

1、 将仪器平放在试片上（假如试验片比仪器小，请将试验片放在仪器前并且把垫片放置于仪器前端下方，目的是使仪器保持水平）。

2、 用刀片削铅笔，使笔心凸出部分约为2-5mm，并在砂纸磨平，再将铅笔插入仪器，使笔心与试验片接触后并固定锁紧，（建议：铅笔为六边形，固定时选择一个平面，

    测试后，旋转两个平面再固定测试，再旋转两个平面固定测试，一个圆周面可使用 

    三次）试验时要将垫片移开。

3、 用姆指与中指抓在两个轮子中心。将仪器从后往前推约1-2cm即可移开仪器，（推仪器时请勿加任何压力）。

判别硬度，看试片有无刮痕。建议试片少做三个位置以上，取平均值。硬度之级数，标配铅笔由软到硬 6B 5B 4B 3B 2B B HB H 2H 3H 4H 5H 6H（共13支）。

备注：

笔尖荷重500g的硬度计，没包装前重量为2kg。加上泡沫纸皮等外包装应该是2.5kg重量。 

笔尖荷重750g的硬度计，没包装前重量为2.4kg。加上泡沫纸皮等外包装应该是3kg重量。

笔尖荷重1000g的硬度计，没包装前重量为2.5kg。加上泡沫纸皮等外包装应该是3kg重量。 

中华铅笔13支:6B 、5B、4B、3B、2B、B、HB、H、2H、3H、4H、5H、6H。