Dynamic High-Temperature Contact Angle Tester

1: Instrument Overview The GFT-1600 Dynamic High-Temperature Contact Angle Tester is a high-temperature transmitted projection device used to measure surface wetting phenomena of different materials under specific temperature environments and the contact angle of metal surfaces. It can monitor the contour changes of various metals, inorganic compounds, or their mixtures throughout the entire heating process from sintering, softening, melting to liquefaction. It can store sample images and related temperature and height information in real time, and analyze parameters such as surface tension and wetting angle based on the shape of the projected images. The instrument features high temperature measurement accuracy and test repeatability, suitable for research departments testing the high-temperature physical properties of materials. It has a high degree of automation, simple and reliable operation, and is especially suitable for routine production testing in metallurgy, chemical industry, power generation, coal, and other enterprises. 2: Principle Explanation This instrument heats and melts the sample, which is vertically titrated onto the contact substrate until contact is made. The shape of the sample changes, forming wetting phenomena and contact angles. The entire process is conducted under vacuum or protective atmosphere conditions, with data acquisition and analysis controlled by computer for automated operation. The sample is heated and melted into a flowing liquid in a vertical pipeline, then directly titrated onto the substrate on the stage in a vacuum atmosphere. The entire process is recorded and automatically stored on the computer for subsequent calculation and analysis, intuitively and accurately reflecting the changes in dynamic contact angle. 3: Main Technical Performance of the Dynamic High-Temperature Contact Angle Tester 1: The image of the test sample is captured by a CCD camera and displayed on the computer screen. Dynamic data acquisition is realized, and during heating, all contour changes of the sample can be observed on the computer screen through intelligent program control; 2: Temperature measurement range: RT to 1700℃, long-term use temperature below 1600℃; 3: Temperature measurement accuracy: ±2 (full scale); 4: Temperature resolution: ±1℃; 5: The heating furnace uses a molybdenum-rhodium wire furnace with a wire diameter of 1.5mm, capable of heating up to 1700℃; molybdenum wire can reach 1750℃ under protective atmosphere; 6: Heating is controlled by a microprocessor program, with a B-type thermocouple placed inside the furnace wall and connected via terminal posts. The temperature control process is determined by a preset control curve on the controller or can be manually controlled; 7: Illumination source uses a 6V, 30W instrument lamp with adjustable brightness or fixed brightness; 8: The temperature control system is centralized in the control cabinet, powered by single-phase 220V, 50Hz; 9: The instrument is equipped with over-temperature and over-current protection; 10: Analysis of contact angles at interfaces of different materials under various temperature conditions is completed by computer software; 11: Image acquisition uses industrial USB CCD (≥5 million pixels); microscope magnification is continuously variable from 0.7 to 4.5 times, magnification range 20-200 times, imaging resolution 2048*1536; A: Camera - USB 2.0 interface digital CCD, 5 million pixels, 25 frames per second shooting speed; B: Lens - 0.7 to 4.5X continuous zoom lens, 50 to 318 pixel/mm image magnification; C: Focusing method - vertical/horizontal + tilt adjustment, manual; D: Light source - LED monochromatic cold light source with adjustable brightness; Main configurations: 1: Vacuum chamber high-temperature heating furnace (1600℃ operating temperature): one set; 2: Imaging system: one set; 3: Sample platform: one set; 4: Testing software: one set