What are the configuration of sprinkler
How do you really understand the sprinkler ? It is necessary to clearly understand the basic configuration of the sprinkler so that the production cost of the sprinkler can be calculated, the performance and operation method of the sprinkler can be known, the maintenance method of the sprinkler can be clearly understood, and the fault can immediately determine the problem. What is the composition of the sprinkler? The sprinkler is mainly composed of a vehicle chassis, a sprinkler tank, a water pump, a pipeline, and a rear console. Sprinkler chassis The chassis is divided into: Dongfeng, Isuzu, Jiangling, Shaanxi Auto, Dayun, Ao Ling, Jianghuai, Chang'an, Futian, Chu Feng, Shi Feng and so on. Take the most commonly used Dongfeng chassis as an example. According to the size of the sprinkler, different Dongfeng chassis can be used. Within 3 squares, the Dongfeng Little Dolika chassis was selected, 4 to 5 were selected from the Freika sprinkler chassis, 6 to 7 squared Dongfeng Dolika chassis, 8 were selected Dongfeng 140 sprinkler chassis, 10 were selected Dongfeng 145 chassis, and 12 selected Dongfeng 153 chassis, 15 selected Dongfeng Tianjin chassis, 16 to 20 square after Dongfeng Tianjin double bridge chassis, more than 25 selected Dongfeng Tianlong first four after eight chassis. Sprinkler tank Sprinkler tanks were selected for special car manufacturers, state-owned enterprise special vehicle manufacturers have Zoomlion, Fujian Longma, Guangzhou Yuehai, Xiagong Chusheng, etc., private enterprise car manufacturers have Cheng Li, Heli, Xinzhong Green , Jackie Chan and so on, the rest are small processing factories. These three kinds of tanks differ greatly in material selection and workmanship, and prices vary widely. Pump The water pump is the core part of the sprinkler. The water pump of the sprinkler also varies in price due to different brands and sizes. What does the pump model mean? For example, SQB80-60/90 is a sprinkler pump model, SQB is a sprinkler pump, 80 is the sprinkler pump inlet diameter, 60 is the sprinkler flow, and 90 is the sprinkler head. Pipeline The pipeline is mainly composed of the front spray, the rear spray, and the high pressure forge. The front spray head is installed on both sides of the front of the chassis. The rear spray is installed on both sides of the chassis. The gun head is installed on the tank body. After the console The rear console mainly controls front spray, rear spray, and high guns. Other sprinkler accessories include sprinkler music horns, sprinkler duckbills, sprinkler showers, three-bending forwards, sprinkler filter tees, front sprayers, sprinklers, sprinklers, sprinklers, and sprinklers. Sprinkler nozzle, sprinkler rear nozzle, sprinkler aluminum alloy duckbill, sprinkler gun base, sprinkler pump, through ball valve, stainless steel sprinkler, sprinkler power takeoff.
The Hardness Tester is a hardness tester. Metal hardness measurements were first defined by Ray Ommel's definition of hardness, which means that the material resists the ability of a hard object to press into its surface. It is one of the important performance indicators of metal materials. The higher the hardness in general, the better the abrasion resistance.
Hardness test is the simplest and most convenient test method in mechanical performance test. In order to be able to replace certain mechanical properties tests with hardness tests, a more accurate conversion of hardness and strength is required in production. Hardness Tester Hardness Tester,Automatic Hardness Tester,Digital Hardness Tester,Vicker Hardness Tester Dongguan Jaten Instrument Co.,LTD(HK TT:Jaten Technology Co.,Ltd ​) , https://www.jatentech.com
1. Dietmar Leeb The Leeb hardness is based on the latest Leeb hardness test principle and is designed using state-of-the-art microprocessor technology.
2. Brinell Hardness (HB) Hardened steel balls of a certain size (typically 10 mm in diameter) are pressed onto the surface of the material at a given load (typically 3000 kg) and held for a period of time. After loading, the ratio of the load to its indentation area , which is the Brinell hardness value (HB) in kilograms force/mm2 (N/mm2).
3. Rockwell Hardness (HR) When HB>450 or the specimen is too small, the Brinell hardness test cannot be used instead. It uses a diamond cone with a vertex angle of 120° or a steel ball with a diameter of 1.59 and 3.18 mm to press the surface of the material under test under a certain load. The hardness of the material is obtained from the depth of the indentation. According to the hardness of the test material, divided into three different situations
HRA: It is the hardness obtained with a 60kg load and a diamond cone press. It is used for materials with extremely high hardness (such as cemented carbide, etc.).
HRB: Hardened steel balls with a load of 100kg and a diameter of 1.58mm are used to obtain a hardness that is used for materials with low hardness (such as annealed steel, cast iron, etc.).
HRC: It is the hardness obtained with a 150kg load and a diamond cone press. It is used for materials with high hardness (such as quenched steel, etc.).
4. Vickers hardness (HV) with a load of 120kg or less and a diamond square cone press with a vertex angle of 136° is pressed into the surface of the material. The load value is divided by the surface area of the material indentation pit, which is the Vickers hardness value. (HV).
5 Knoop Hardness (HK)
Suitable for hardness testing of high hardness materials (general hardness measurement above HV1000 hardness).
6. There are Shore hardness tester
7. Wechsler hardness tester (HW)
Suitable for the measurement of Vickers hardness value of aluminum alloy products.
8 plaster hardness tester
Applicable to the measurement of the hardness of building plaster, the steel ball is placed on the test piece, and the depth of the ball mark under the effect of the fixed load is measured, and the plaster hardness of the test piece is calculated.
The above hardness is only a few commonly used, in addition to Shore hardness, Shore hardness, Barcol hardness, Mohs hardness. Practice has shown that there is an approximate correlation between hardness values and strength values between various hardness values of metallic materials. Because the hardness value is determined by the resistance to initial plastic deformation and the resistance to continued plastic deformation, the higher the strength of the material, the higher the resistance to plastic deformation and the higher the hardness value.