漆膜擺式硬度計是檢測儀器，適用于色漆、清漆及其有關產品的取樣試驗，以測定色漆、清漆及其有關產品的皮膜硬度。

Paint film pendulum hardness tester is a testing instrument suitable for sampling tests of paints, varnishes and related products to determine the film hardness of paints, varnishes and related products.

漆膜擺式硬度計特點表現(xiàn)在水平機構的改進；刻度標尺能夠水平移動，便于零點調整；加之配以光電計數(shù)器，因此，快速、準確、節(jié)省人力。

The characteristics of the paint film pendulum hardness tester are reflected in the improvement of the horizontal mechanism; the scale can be moved horizontally to facilitate zero adjustment; coupled with a photoelectric counter, it is fast, accurate and saves manpower.

漆膜擺式硬度計工作原理：

有一定重量和形狀的擺，接觸于被測皮膜的表面，由于重力擺和涂層間的相互作用是復雜的彈性和粘彈性的兩種性質，且又因擺的重量、形狀以及地理和環(huán)境等因素的影響，因此，表面愈軟，接觸于這一表面的重力擺的擺幅衰減愈快。

皮膜硬度的表示是以一定重量的擺，置于標準玻璃上，在規(guī)定的角度范圍內所擺動的振幅時間或次數(shù)和置于被測皮膜上，在規(guī)定的角度范圍內所擺動的在振幅時間或次數(shù)之比表示之，

即： H=n/n0

式中：n：擺在皮膜上，在規(guī)定的角度范圍內所擺動的振幅時間或次數(shù)。

n0：擺在玻璃板上，在規(guī)定的角度范圍內所擺動的振幅時間或次數(shù)。

Working principle of paint film pendulum hardness tester:

A pendulum with a certain weight and shape is in contact with the surface of the film under test. Due to the interaction between the gravitational pendulum and the coating, it is a complex two kinds of elastic and viscoelastic properties. And other factors, so the softer the surface, the faster the swing of the gravitational pendulum that contacts this surface decays.

The hardness of the film is expressed by a certain weight of the pendulum, placed on the standard glass, the amplitude time or number of swings within the specified angle range, and the amplitude time Or the ratio of times,

That is: H = n / n0

In the formula: n: the amplitude time or number of swings on the membrane within a specified angle range.

n0: amplitude time or number of swings on a glass plate within a predetermined angle range.

漆膜擺式硬度計技術指標：

（一） 擺

★擺的形式 M—3

★擺的總質量 120g±1g

★擺的玻璃值 440S±6S 記數(shù)：352±4次

（二）專用計數(shù)器

★電源 22V~ 50HZ

★功耗 4W

★記數(shù)范圍 0~999

★外形尺寸：200X150X570mm

★重量：25kg

Technical index of paint film pendulum hardness tester:

(A) pendulum

★ The form of pendulum M-3

The total mass of the pendulum 120g ± 1g

★ Swing glass value 440S ± 6S Count: 352 ± 4 times

(Two) dedicated counter

★ Power 22V ~ 50HZ

★ Power consumption 4W

★ Count range 0 ~ 999

★ Dimensions: 200X150X570mm

★ Weight: 25kg

漆膜擺式硬度計操作與使用：

★從附件箱里拿出地角調整螺釘墊片，放入儀器外罩內，把主機放置其上，調整地角螺釘，觀看水平泡，把主機調整并置于水平位置。

★把電源插頭線盒光電頭線分別插于計數(shù)器后面的各自插座上。把光電頭線另一端的U型支架放在標尺后面的U型支架固定槽內，并用相應的螺釘緊固。光電頭所放的位置應在標尺刻度線2°內側之切線位置處。

★把擺從附件箱里取出來，置于工作臺和標準玻璃板上，扳起定位提手，把擺之橫梁上的缺口對準定位提手的刀口，擺靜止后，應對準標尺刻度的另點，如不在另點則應水平移動標尺，然后用支柱上的螺釘緊固住。

★啟動擺條推動機構、止動機構，使擺條置于5°的正視線上，扳下定位提手。

★接通計算器電源，啟動計數(shù)器電源開關，推動止動裝置使擺條自由擺動（注意擺條支點不要移動）擺條在標準玻璃上擺動的時間為440S±6S，次數(shù)為352±4次。若不在此時間或次數(shù)內則應調整擺上的微調捶，反復微調，使其達到上述標準值。

★把所測涂料用涂膜涂布器或其它方法均勻地涂布在試驗用玻璃板上。

★涂膜的干燥（自干或烘干）應達到產品要求所規(guī)定的時間。

★漆膜的厚度應達到產品所規(guī)定的標準。

★把制備好的漆膜試驗板放置在工作臺上，觀其擺從2°~5°擺動所用的時間和次數(shù)，并將其秒數(shù)，或次數(shù)記錄下來。

★用工作原理一節(jié)中所提供的公式計算之，所得之數(shù)即為所測漆膜硬度值，一般在一塊試片上（不同位置）作三次試驗，將所得的結果求取算術平均值為A后結果，但兩次所測得之差，不得大于3%（秒數(shù)）度數(shù)不得大于5% 。

★每次試驗前應用、乙醇或溶機汽油將標準玻璃板或擺條上的鋼珠擦拭干凈，擦拭所用之抹布應清潔，不要把標準玻璃板造成劃痕。

★支點鋼珠應定期檢查，當發(fā)現(xiàn)有鋼珠表面損傷時，可稍微移動鋼珠，變換它的接觸點，鋼珠表面如磨至不符合要求時，則應更換新鋼珠。

★應當指出：本儀器反映了涂料對其環(huán)境的敏感性，因而試驗應當在25±1°C，相對濕度60%~70%，周圍無振動的條件下，且在無氣流的條件下進行之。因此，試驗時必須加外罩并關閉所有小門

Operation and use of paint film pendulum hardness tester:

★ Take out the ground angle adjustment screw gasket from the accessory box, put it into the instrument cover, place the main unit on it, adjust the ground angle screw, watch the horizontal bubble, adjust the main unit and place it in a horizontal position.

★ Plug the photoelectric plug wire of the power plug box into the respective sockets behind the counter. Put the U-shaped bracket at the other end of the photoelectric cable into the U-shaped bracket fixing groove behind the ruler, and fasten with the corresponding screws. The position of the photoelectric head should be at the tangent position on the inner side of the scale's 2 °.

Remove the pendulum from the accessory box, place it on the workbench and standard glass plate, pull up the positioning handle, align the gap on the pendulum beam with the knife edge of the positioning handle. After the pendulum is stationary, it should be aligned with the scale. At another point, if not at the other point, move the ruler horizontally, and then fasten it with the screws on the pillar.

★ Activate the pendulum push mechanism and stop mechanism, place the pendulum on the front line of 5 °, and pull down the positioning handle.

★ Turn on the power of the calculator, start the power switch of the counter, and push the stop device to make the pendulum swing freely (be careful not to move the fulcrum of the pendulum). The time for the pendulum to swing on the standard glass is 440S ± 6S, and the number of times is 352 ± 4. If it is not within this time or number of times, the fine adjustment on the pendulum should be adjusted and repeated fine adjustment to make it reach the above standard value.

★ Apply the coating film applicator or other method for the tested coating to the test glass plate uniformly.

★ The drying of the coating film (self-drying or drying) should reach the time specified by the product requirements.

★ The thickness of the paint film should reach the standard specified by the product.

★ Place the prepared paint film test board on the workbench, observe the time and number of times it takes to swing from 2 ° to 5 °, and record the number of seconds or times.

★ Calculate it with the formula provided in the working principle section. The number obtained is the hardness value of the paint film measured. Generally, three tests are performed on a test piece (different positions). The arithmetic average of the obtained results is A. After the results, but the difference between the two measurements should not be greater than 3% (seconds) degrees should not be greater than 5%.

★ Before each test, wipe the steel balls on the standard glass plate or pendulum with ethanol or solvent gasoline. The cloth used for wiping should be clean, and the standard glass plate should not be scratched.

★ The fulcrum steel ball should be inspected regularly. When the surface of the steel ball is found to be damaged, the steel ball can be moved slightly to change its contact point. If the surface of the steel ball is ground to meet the requirements, it should be replaced with a new steel ball.

It should be pointed out that this instrument reflects the sensitivity of the coating to its environment, so the test should be performed under the conditions of 25 ± 1 ° C, relative humidity of 60% ~ 70%, no vibration around, and no air flow. . Therefore, it is necessary to cover and close all small doors during the test.

QBY-II漆膜擺式硬度計結構：

共分五部分組成：a、底座部分；b、工作臺部分；c、擺；d、計數(shù)器部分；e、儀器外罩部分。

QBY-II paint film pendulum hardness tester structure:

It is divided into five parts: a, base part; b, table part; c, pendulum; d, counter part; e, instrument cover part.