QHQ-A 便攜式鉛筆法硬度計

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）行業(yè)進行質(zhì)量認定的必測指標。鉛筆劃痕法測試涂膜硬度是自八十年代以來被普遍采用的測試方法。我國也已在涂料的發(fā)展研究和工業(yè)生產(chǎn)中推廣這種測試方法。本儀器是根據(jù)標準“涂膜硬度鉛筆測定法”《GB6379-86》第2、3條手工操作法而設計制造的。儀器即可在實驗室使用，也可適用于施工現(xiàn)場，并能在任意方向上對涂膜硬度進行鑒定。

二．結(jié)構(gòu)及工作原理

    儀器為機械式，三點接觸被測表面（二點為輪，一點為鉛芯）始終保證鉛筆與被測表面形成45°夾角，用力水平推動儀器運動，即可完成測試過程，測定涂膜抵抗變形的能力。

三．使用要求

1．GB1279-79《漆膜一般制備法》制備驗件三塊，一般為平滑馬口鐵板120*50*（O.2-0.3）mm，

   或產(chǎn)品另行規(guī)定的底材及尺寸。

2．試驗條件：按產(chǎn)品標準規(guī)定或施工要求的條件進行。

四．使用方法：

1、 將儀器平放在試片上（假如試驗片比儀器小，請將試驗片放在儀器前并且把墊片放置于儀器前端下方，目的是使儀器保持水平）。

2、 用刀片削鉛筆，使筆心凸出部分約為2-5mm，并在砂紙磨平，再將鉛筆插入儀器，使筆心與試驗片接觸后并固定鎖緊，（建議：鉛筆為六邊形，固定時選擇一個平面，

    測試后，旋轉(zhuǎn)兩個平面再固定測試，再旋轉(zhuǎn)兩個平面固定測試，一個圓周面可使用 

    三次）試驗時要將墊片移開。

3、 用姆指與中指抓在兩個輪子中心。將儀器從后往前推約1-2cm即可移開儀器，（推儀器時請勿加任何壓力）。

判別硬度，看試片有無刮痕。建議試片少做三個位置以上，取平均值。硬度之級數(shù)，標配鉛筆由軟到硬 6B 5B 4B 3B 2B B HB H 2H 3H 4H 5H 6H（共13支）。

備注：

筆尖荷重500g的硬度計，沒包裝前重量為2kg。加上泡沫紙皮等外包裝應該是2.5kg重量。 

筆尖荷重750g的硬度計，沒包裝前重量為2.4kg。加上泡沫紙皮等外包裝應該是3kg重量。

筆尖荷重1000g的硬度計，沒包裝前重量為2.5kg。加上泡沫紙皮等外包裝應該是3kg重量。 

中華鉛筆13支:6B 、5B、4B、3B、2B、B、HB、H、2H、3H、4H、5H、6H。