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荣计达台式铅笔硬度计

台式铅笔硬度计通过犁破漆膜的铅笔硬度等级测定漆膜硬度试验。

  • 型号:QHQ

  • 产品参数
  • 型号:QHQ

 

台式铅笔硬度计通过犁破漆膜的铅笔硬度等级测定漆膜硬度试验

The bench pencil hardness tester measures the film hardness test by the pencil hardness level of the plowed paint film.

 

台式铅笔硬度计技术特征:硬度以在规定试验条件下通过犁破漆膜的铅笔硬度等级表示;试验台可移动。

Bench-top pencil hardness tester Technical characteristics: Hardness is expressed by the pencil hardness level of the plowed paint film under the specified test conditions; the test stand is movable.

 

台式铅笔硬度计技术参数:

★荷重:500/750/1000+/-1g

★执行标准:GB/T6739-86 / JIS K5401 / ASTMD2197

★铅笔与试样夹角:45度

★铅笔规格:6H-6B(共13支中华牌铅笔)

★长*宽*高:450mm*150mm*270mm

Bench-top pencil hardness tester technical parameters:
★Load: 500/750/1000+/-1g
★Executive standard: GB/T6739-86 / JIS K5401 / ASTMD2197
★The angle between the pencil and the sample: 45 degrees
★ Pencil specifications: 6H-6B (a total of 13 Zhonghua brand pencils)
★Long*Width*Height: 450mm*150mm*270mm

 

台式铅笔硬度计工作原理:

涂膜硬度是涂膜的一种重要物理性能,其大小直接影响涂膜的一些重要使用性能,例如耐磨损性、耐磨粒性能、耐摩擦性、耐划痕性、耐冲击性及涂膜滞留作用及清洗难易等,因此,涂膜硬度是评定涂料性能的必测指标。使用本仪器可方便地测定涂膜硬度。

Benchtop pencil hardness tester works:
Film hardness is an important physical property of the film, and its size directly affects some important performance properties of the film, such as abrasion resistance, abrasion resistance, abrasion resistance, scratch resistance, impact resistance and coating. Film retention and ease of cleaning, etc., therefore, film hardness is a must-measure for evaluating coating performance. The hardness of the film can be easily determined using this instrument.

 

台式铅笔硬度计主要由铅笔架和试验台组成,铅笔架与立柱等组成四连杆结构,保证了砝码的重量垂直作用于铅笔芯与试验台的交点上,并使铅笔与试验台成45°夹角,并保持不变。试验台可横向、纵向移动,用它固定涂料样板,并使样板朝着划痕方向滑动,铅笔就在试片上划出相应轨迹来。换用不同铅笔划不同痕迹,据此可判定涂膜的硬度值。

The desktop pencil hardness tester is mainly composed of a pencil stand and a test stand. The pencil stand and the column form a four-bar linkage structure, which ensures that the weight of the weight acts perpendicularly on the intersection of the pencil lead and the test stand, and makes the pencil and the test bench 45. ° Angle and remain unchanged. The test bench can be moved horizontally and vertically, and the paint sample is fixed by the test plate, and the sample plate is slid toward the scratch direction, and the pencil draws a corresponding trajectory on the test piece. Use different pencils to draw different marks, and then judge the hardness value of the film.

 

台式铅笔硬度计操作及使用方法:

★准备

GB1727-70要求准备120*50*(0.2-0.3)平滑马口铁板或按产品规定的底材,制备涂膜。

用铅笔刀把每支铅笔前端削去木质部分,露出5-6mm柱状笔芯(注意铅笔芯A松动或削伤铅芯),用手握住铅笔,使铅笔始终与400号砂纸成90°角,在砂纸上摩擦铅芯端面,直到获得一端平滑边缘锐利的笔端为止(边缘要无破碎或缺口)

把削好的铅笔插入铅笔架上。调整铅笔,使铅笔芯工作端面与砝码重心重合(相应铅芯工作端面与铅笔架约25mm),然后用螺钉拧紧,使铅笔位置固定。

松开夹紧螺母,放入需测定的涂膜试片,然后拧紧螺母,使试片固定。

松开止动螺钉,调整平衡锤,使工作杆平衡(即使铅笔刚好接触到试片上),然后拧紧止动螺钉,使铅笔芯工作面离开涂膜试片。

把砝码轻轻放在铅笔架上。

★测试

松开止动螺钉,使铅笔芯轻轻降下到被测涂膜试片上。

转动手轮,使涂膜板朝划痕方向移动大约5mm(顺时针转动手轮),并留意观察表面是否划破。

取下砝码,更换铅笔,旋动试台旋扭,使试验台纵向移动一定距离更换试片划痕位置,重复准备操作后,再做下一次试验,依次用每种型号硬度的铅笔一次犁出五道痕迹。

A硬的铅笔开始用此方法,当鉴定五道痕迹中,若有两次或两次以上犁伤膜时,换上一级的铅笔,直到找出五道痕迹中,只有一次犁伤涂膜的铅笔(或没有破坏)。则这一级铅笔的硬度值就代表被测涂膜的硬度。

Desktop pencil hardness tester operation and use method:
★Prepare
Prepare 120*50*(0.2-0.3) smooth tinplate or according to the product specified in GB1727-70 to prepare the coating film.
Use a pencil sharpener to cut the front end of each pencil to reveal the 5-6mm cylindrical refill (note that the pencil lead A looses or scratches the lead), hold the pencil with your hand, and keep the pencil at a 90° angle to the 400 sandpaper. Rub the lead end face on the sandpaper until a sharp end of the end of the pen is obtained (the edge is not broken or notched)
Insert the sharpened pencil into the pencil holder. Adjust the pencil so that the working end of the pencil lead coincides with the center of gravity of the weight (corresponding to the working edge of the lead core and the pencil holder about 25mm), and then tighten with screws to fix the pencil position.
Loosen the clamping nut, insert the test piece to be measured, and then tighten the nut to fix the test piece.
Loosen the set screw, adjust the counterweight, balance the work bar (even if the pencil just touches the test piece), and then tighten the set screw to leave the pencil lead working face away from the coated test piece.
Gently place the weight on the pencil holder.

★test
Loosen the set screw and gently lower the pencil lead to the test piece on the test film.
Turn the handwheel to move the film plate about 5mm in the direction of the scratch (turn the handwheel clockwise) and pay attention to whether the surface is scratched.
Remove the weight, replace the pencil, rotate the test bench, and move the test bench longitudinally to change the scratch position of the test piece. After repeating the preparation, do the next test, and then plow the pencil with each type of hardness. Five traces.
Use this method from A hard pencil. When identifying five traces, if there are two or more plows, replace the pencil with one level until you find one of the five traces. Film pencil (or no damage). Then the hardness value of this grade pencil represents the hardness of the film to be tested.

 

台式铅笔硬度计日常维护:

本仪器使用时力求转动灵活,使用一段时间后,须在丝杆、轴承等转动部位注入机油。

本仪器使用一段时间后,紧定螺钉,螺母须拧紧,以免松动。

Desktop pencil hardness tester daily maintenance:
The instrument is designed to be flexible when used. After a period of use, the oil must be injected into the rotating parts such as the screw and the bearing.
After the instrument has been used for a period of time, tighten the screws and tighten the nuts to avoid loosening.


荣计达台式铅笔硬度计

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