试验室CGMH型自动数显搁板式磨耗试验机技术参数
Laboratory parameters Automatic digital shelf type wear testing machine

一、用途：

I. Purpose:

本机主要适用测定石料的磨耗率。

This machine is designed for determination of abrasion ratio of stones.

二、结构：

II. Structure:

本机主要有圆筒、搁铁、密封盖、支架、变速箱、电机、料斗及计数器等部件所组成。

This machine is mainly composed of cylinder, placement iron, sealing cover, support, transmission case, motor, hopper and counter etc.

三、主要技术参数：

III. Main Technical Parameters:

1、圆筒内径× 内长：710±5㎜×510±5㎜

2、转速：30-33r/min

3、计数器：5位

4、外形尺寸：1320×980×1050㎜

5、钢球：Ф48㎜

1. Cylinder inner diameter × inner length: 710±5㎜×510±5㎜

2. Rotation speed: 30-33r/min

3. Counter: 5 digits

4. Outside dimensions: 1320×980×1050㎜

5. Steel ball: Ф48㎜

四、使用方法：

IV. Operation Method

1、试验前必须检查线路是否完好，并用手拨动滚筒旋转是否转正常（按筒旋转箭头方向）。同时，将计数调整到零位。

1. Be sure to check if the line is in good condition before test and to rotate the cylinder to check if it rotates normally (in the direction of arrow). And then set the counter to zero position.

2、将试用的碎石料和钢球装入筒内、密封盖好、拧紧螺钉、开动仪器转动500转后停止，取出试样。

2. Place the gravels and steel balls into cylinder, cover the seal gland, fasten the screw and start the instrument. Stop the machine after 500 rounds of operation and take out the test sample.

3、用直径2㎜圆孔筛式边长2.6㎜方孔筛。筛法试样中的石屑，用水冲洗留在筛上的碎石烘重、恒重，准确称出重量。

3. Screen the stone chips from the test sample with round-hole sieve with a diameter of 2mm or square-hole sieve with an edge length of 2.6mm. Wash and dry the gravels left on the sieve and weigh them accurately.

五、计算方法：

V. Calculation method:

1、按下列计算石料磨耗率精确至0.1%。

1. Calculate the stone abrasion ratio according to the following formula (accuracy to 0.1%).

Qa – abrasion ratio of stone: %

G1 – original weight of gravels loaded in cylinder: g

G-2 – the weight after washing and drying after the test: g

2、试验结果为两次试验之平均值，两次误差不大于2%，否则需要重新试验。

2. The test result is the average value of two tests, between which the error shall not exceed 2%. Otherwise, another test shall be conducted.