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Test film Anti-stoning

Were not plan A, - '. . ● '. ● Can'~,'. . ● b50-74 House of recollected fragments d250 House of recollected fragments diameter: 6 mm above the map down: 250 House of recollected fragments the same. Some are relatively crisp, and some more hard, they are good at the same time hit film specimen will autocorrelation impact. More crispy pieces of gravel can be good at, do not meet the requirements, the need for regular screening, to test the inconvenience. The second is the standard picture is only four,[link widoczny dla zalogowanych], the gap between them is too large span of the test results will be many ranging in the four standard graph between the graphics,[link widoczny dla zalogowanych], to the development of graphics-level difficulties. For these reasons, people continue to explore improved test film Anti-stoning. Here, we test methods for the country most important book, that \This test method differs from the ASTM standard is this: First, the jet angular material the use of specific cast iron with steel shot - emery, specifications for the 1500 ± 200 / 500g, when using the 100 to replace the steel after pills. Components than using complex, hard gravel in varying degrees, can significantly extend the life of ejecta. Second, the book way more than the country a \The experimental data more accurate and reliable. Figure B shows. Indiscriminately B; ten carbon steel hit Yap transparent membrane surface phototherapy degree of cardboard with 500g of the ejecta, the gauge pressure of 2 bar when the steel in the lO material ejected seconds to complete the test. The attack by carbon paper marks printed on the surface of the color brightness light board. Ejecta particles directly in the impact of values shown in the figure out, when testing the impact of the provisions of the standard map and chart the value of dependability characteristics of a value of 4 3 of the value of the property value Zhu 4,5 prince Yu 3 domain of values D (peak - female F., a C shape of fins while I 『official use only, or should be appropriately adjusted, level of development of anti-stoning. the whole test {Ai device. In addition must also be noted that: a film test against stoning.: ■ a: * ・ 't ,[link widoczny dla zalogowanych]。:.'' drug '0 :.,., 0:. I? transcripts core.' _ Figure C three different coatings on different injection methods. such as: For the finish, test the two jet times per 500g. pressure of 1 bar (1OOkPa); for the coating structure test, spray twice 500g, the pressure of 2 bar (200kPa); for additional anti-corrosion test stoning test, first 2 bar (200kPa) pressure,[link widoczny dla zalogowanych], with 50Og Grit 1 after injection,[link widoczny dla zalogowanych], then a corrosion test. Finally, at 2 bar (200kPa) pressure, the impact of a model with 500g Grit once again. Four, \map \(See Figure D. stoning grade). \Good air conditioning control, and to model the impact on the film. impact is completed. closed switch. Souba days following the model of accumulation of the vibration of the jet transport aircraft to return things. testing process to the interest in the case of repeated (see stoning resistance meter circle diagram E). then. the length of about 12 ~ 15cm of the paste adhesive tape completely coating the surface of love and loss compression. remaining side upward. After the adhesive tape torn off rapidly, so that in the adhesive tape affixed to timely hit by the impact of the film hit further off, the final grading and stoning around 20 to control than a set of test used to identify standards and methods. anti-stoning test is car paint to experiment with the characteristics of . scientists through continuous in-depth study. find car paint against the stoning of the function involved in many aspects. One of the most significant in relation to the automotive finish, the middle layer, 'the adhesion between the primer and clear that they The difference between, for example, the Audi brand sedan, paint coating on the test requirements of anti-stoning ≤ 2 level. all the provisions of ≤ 4 coating level (both German standard). At present, China has not yet formally create stoning resistant coating device, there is no work out their own anti-stoning trial standards. but in this area of research and development work in progress, I believe that in the near future, certain instruments made in conjunction with anti-stoning the world. our own anti-rock attack test standard will be introduced. Figure E (open tiny) l air control valve 7. accelerated past (voltage) 2. possession of pressure with 8 bearing 3. compressed air storage (instructions) 9. vibrating conveyor 4. pressure funeral 1O . control the rebel 5. spray ml1. Grit collector 6. slideway model l2
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