tailieunhanh - Lubrication and Reliability Handbook 2010 Part 11

Tham khảo tài liệu 'lubrication and reliability handbook 2010 part 11', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | B16 Brake and clutch failures Some of the more common brake and clutch troubles are pictorially presented in subsequent sections although these faults can affect performance and shorten the life of the components only in exceptional circumstances do they result in complete failure. BRAKING TROUBLES Metal surface Heat spotting Characteristics Crazing Characteristics Scoring Characteristics Small isolated discoloured regions on the friction surface. Often cracks are formed in these regions owing to structural changes in the metal and may penetrate into the component. Causes Friction material not sufficiently conformable to the metal member or latter is distorted so that contact occurs only at small heavily loaded areas. Randomly orientated cracks on the rubbing surface of a mating component with main cracks approximately perpendicular to the direction of rubbing. These can cause severe lining wear. Causes Overheating and repeated stresscycling from compression to tension of the metal component as it is continually heated and cooled. Scratches on the rubbing path in the line of movement. Causes Metal too soft for the friction material abrasive debris embedded in the lining material. Friction material surface Heat spotting Characteristics Heavy gouging caused by hard proud spots on drum resulting in high localised work rates giving rise to rapid lining wear. Causes Material rubbing against a heat-spotted metal member. Crazing Characteristics Randomly orientated cracks on the friction material resulting in a high rate of wear. Causes Overheating of the braking surface from overloading or by the brakes dragging. Scoring Characteristics Grooves formed on the friction material in the line of movement resulting in a reduction of life. Causes As for metal surface or using new friction material against metal member which needs regrinding. Brake and clutch failures B16 Fade Characteristics Material degrades at the friction surface resulting in a decrease in and a loss in

TỪ KHÓA LIÊN QUAN
crossorigin="anonymous">
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.