MTG耐碎石冲击试验机

MTG resistance to impact testing machine

是由SAE下属的一个委员会设计的。该委员会是由汽车的主要生产商和供应商组成，它一直用于准确再现由飞溅的砂砾造成的破化现象。MTG独特的设计适用于进行下列测试内容：

Was designed by a committee of SAE. The committee is composed of the main manufacturers and suppliers of the car, which has been used to accurately reproduce the phenomenon caused by the splashing of gravel. MTG unique design for the following test content:

·外涂层粘聚性破坏试验

External coating adhesion destruction test

·涂层系统中不同层间粘合性破坏试验

Test of adhesion failure of different layers in the coating system

·硬质玻璃材料的脆性厚度

Brittle thickness of hard glass

·抗剥落的最优涂膜厚度

Optimum film thickness of anti stripping

·塑料及玻璃的抗剥落、抗碰撞、抗磨损测试

- Anti - stripping, anti - impact, anti - wear test of plastic and glass

MTG耐碎石冲击试验机遵守下列机构的测试试验程序的要求:

MTG resistance to impact testing machine for testing the impact of the following agencies of the test procedures:

1.汽车工程师协会(SAE)

1 Automotive Engineers Association (SAE)

2.美国测试与材料协会(ASTM)

2 American Association for testing and materials (ASTM)

3.德国汽车工作协会(VDA)

3 German Automobile Association (VDA)

4.通用汽车(GENERAL MOTORS)

4 General Motors (MOTORS GENERAL)

5.克来斯勒(CHRYSLER)

5 Chrysler (CHRYSLER)

6.大众(VOLKSWAGEN)

6 public (VOLKSWAGEN)

7.福特汽车(FORD MOTOR)

7 Ford Motor (MOTOR FORD)

8.丰田(TOYOTA)

8 TOYOTA (TOYOTA)

9.马自达(MAZDA)

9 Mazda (MAZDA)

10.尼桑(NISSAN)

10 NISSAN (NISSAN)

MTG耐碎石冲击试验机技术参数

Technical parameters of MTG resistance to impact testing machine

EMC 抗扰性： EN 50082-2（1995）

EMC immunity: 50082-2 EN (1995)

EMC 放射性： 符合EN 55011（1997）一级的要求

EMC activity: meet the requirements of EN 55011 (1997).

空气：

Air:

气体消耗量： 最多需要80psi，流量为100立方英尺/分的气体5-10秒（VDA标准要求的比较少）

Gas consumption: 80psi, flow is 100 cubic feet / min of gas 5-10 seconds (less than VDA).

压缩空气： 压力80psi，流量为100立方英尺/分

Compressed air: pressure 80psi, flow rate of 100 cubic feet / min

压缩空气管道的内径：SAE测试： 3/4英寸（19mm）或更大

Compressed air pipe diameter: SAE test: 3/4 inch (19mm) or more

VDA测试： 1/2英寸或更大

VDA test: 1/2 in.

空气槽容积： 30加仑

Air tank volume: 30 gallons

运行温度： -30℃---40℃

Operating temperature: -30 ---40

最大相对湿度： 温度达到31℃时湿度80%，当温度达到40℃时湿度线形的减少到50%

The maximum relative humidity: the temperature reached 80% degrees when the humidity of 40, when the temperature reached 31 degrees Celsius humidity linear reduction to 50%

污染控制： 达到环境保护的2级

Pollution control: 2 levels of environmental protection

声压等级： 约为130dBA

Sound pressure level: about 130dBA

海拔高度： 2000m

Altitude: 2000m

连续运行： 适用于连续运行

Continuous operation: it is suitable for continuous operation

射枪筒内径：

Gun barrel inner diameter:

SAE J400：2.07英寸(52.6mm)

J400:2.07 SAE inch (52.6mm)

VDA： 11.42英寸(290mm)

VDA: 11.42 inch (290mm)

平面检测样品尺寸：

Plane test sample size:

4X6英寸(101.6 X152.4mm)

4X6 inch (101.6 X152.4mm)

4X8英寸(101.6 X203.2mm)

4X8 inch (101.6 X203.2mm)

4X12英寸(101.6 X304.8mm)

4X12 inch (101.6 X304.8mm)

厚度最高到7/16英寸(11.11mm)

The highest thickness to 7/16 inch (11.11mm)

也可以接受样品的最大宽度为4.125英寸(104.8mm)

The maximum width of the sample is 4.125 inches (104.8mm).

MTG耐碎石冲击试验机是由标准件组装构成并且配有易于装卸的配件，因此你可以在一台测试仪上进行所有主要的汽车材质剥落测试。主要的标准组件有：射枪组件、碰撞室和试件夹持器。MTG石击仪的独特设计可使之每天进行上百次的测试。它能快速进行试样的装卸并配有外置式的砂砾收集箱，方便实用。此外砂砾测试仪还可对测试参数进行更精确的控制，并可进行符合ISO9000的测试校准。

MTG resistance to impact testing machine is composed of standard parts and easy loading and unloading parts, so you can carry out all the main car material on a test on a test. The main standard components are: shot gun components, collision chamber and test piece clamp. Every day the unique design of the MTG Jiyi stone can be hundreds of times the test. It can quickly carry out the loading and unloading of the sample with an external type of gravel collection box, convenient and practical. In addition, the sand gravel tester can also be used to control the test parameters more accurately, and can be used to meet the ISO9000 test and calibration.

选择下列不同的标准组件，系统可进行不同的测试：

Choose the following different standard components, the system can carry out different tests:

·SAE射枪组件

SAE gun component

·VDA射枪组件

VDA gun component

·SAE 90 碰撞室

- SAE 90 collision chamber

·VDA 90 碰撞室

- VDA 90 collision chamber

·SAE 45 碰撞室

- SAE 45 collision chamber

·VDA 54 碰撞室

- VDA 54 collision chamber

·平板式试件夹持器组件

- plate type specimen holder assembly

·3D试件箱

3D test case

本试验台由4个主要部分组成：

This test rig is made up of 4 main parts:

1． 液压系统：循环泵、脉冲发生器。

1 hydraulic system: circulating pump, pulse generator.

2． 试验柜：主要用于安装待试验的热交换器，调压及系统压力指示。

2 test cabinet: mainly for the installation of the test of the heat exchanger, pressure and system pressure.

3． 温度控制系统（箱体温度控制系统，流质温度控制系统）

3 temperature control system (box temperature control system, liquid temperature control system)

4． 电器控制柜及计算机测试系统：启动按钮和仪表均安装在操纵台上，便于集中控制和监测情况，计算机系统可以采集试验压力波形、试验次数、脉冲频率、介质温度等参数且具备报表打印功能，并有故障通告功能。

4 electric control cabinet and computer test system: the start button and the instrument are installed on the operating table. It is convenient for centralized control and monitoring.

下面就这几个方面实现的功能进行介绍

The functions described below are introduced in this paper.

一、液压脉冲系统

Hydraulic impulse system

系统框图：

System block diagram:

因为我们知道，液压系统是实现压力脉冲模拟以及压力控制的基础，主要设计难点是压力的控制，压力上升的速率，以及测量件故障损坏告知和自动处理。

Because we know that the hydraulic system is the basis of the pressure pulse simulation and pressure control, the main design difficulty is the pressure control, the pressure rise rate, as well as the measurement of the fault damage to inform and automatic processing.

在设计压力控制中，我们采用变排量的液压泵以及电子溢流控制阀等部件组成的回路进行高压的控制，低压由电子泄流阀等组成的低压控制回路。但是压力上升的速度是由于压力泵的排量决定的。（我们知道，压力升高，测量件将会变形，容积会增进。增进的压力和容积有个相对应的关系）因此，在最快速的脉冲试验中，在多短的时间中，注入测试件的液体容积是关键，这也是我们计算泵排量的基础。

In the design of pressure control, we use the variable displacement hydraulic pump and electronic overflow control valve and other components of the circuit to control the high voltage, low voltage control circuit composed of electronic discharge valve and so on. But the pressure rise is due to the pressure of the pump's displacement. (we know that the pressure rise, the measurement will be deformed, the volume will increase. Therefore, in the most rapid pulse test, in a number of short time, the volume of the injection of the test piece is the key, which is the basis for the calculation of the displacement of the pump.

二．箱体设计

Two. Box design

我们知道，一个系统是有很多小系统组成的，箱体是由液压系统和热交换系统，控制仪表等组成的一个有机体，在设计中我们首先根据设计要求必须双开门，就是正面和反面都可以开门。在门都安装闭合检测开关，进行测量检测，以满足试验安全性。

We know that a system is composed of many small system. The box body is by the hydraulic system and heat exchange system and control instrument consisting of an organism, in the design we first according to the design requirements must be double door is positive and negative could open the door. The doors are installed with a closed switch, which is measured to meet the safety of the test.

整个箱体外围是个空气循环系统，到测试室的空气，进行充分的热交换，保证箱体的控制温度。当然，箱体间的隔热处理也是十分重要的。

The whole cabinet is a peripheral air circulation system, to the test chamber of the air, the full heat exchange, to ensure the control of the box temperature. Of course, heat insulation between the box is also very important.

箱体尺寸：1500*1000*1000。

Box size: 1500*1000*1000.

箱体材料：内部采用不锈钢（SUS），外部保温处理。并安装有2个观测口（250*300），2开门。

Box material: stainless steel (SUS), external heat preservation. And install 2 observation port (250*300), 2 open the door.

三、箱体温度控制和液压系统控制。

Three, box temperature control and hydraulic system control.

箱体的温度控制，我们在上面进行了说明。按标准由于液压部分的温度达到140度，加热系统必须在有压力的情况下进行，液压部分的加热，在压力泵输出后端

Temperature control of the box body, we are described above. According to the standard due to the hydraulic part of the temperature reached 140 degrees, the heating system must be carried out in the case of pressure, the hydraulic part of the heating, the output of the pressure pump