Accelerate the oxidation of tungsten, seriously shorten the life of the product, resulting in product failure

Tungsten halogen lamp with a key piece for the electrodes, tungsten and key pieces connected by spot welding, glass bulb filled with hydrogen, platinum plate and a glass full sealing at high temperatures to form tungsten halogen lamps. Tightness after sealing a direct impact on the life of the lamp. The quality of the products examined the strange, often found in air bubbles in the glass sealing surface Swiss platinum pieces, about 20% of total production. Gas tube leak caused the emergence of satiety, while accelerating the oxidation of tungsten, severely  copper molybdenum  of the product, resulting in product failure. In order to find out the reason for the gas saturation and gas saturation of the proposed measures to prevent, paper, failure analysis methods applied spectroscopy, scanning  Tungsten copper alloy  and transmission electron microscopy and other means to conduct research on a seal platinum chip sealing in high temperature and glass. The results showed that when aluminum and glass at high temperature sealing, are key causes of the bubble sheet internal inclusions and gases, the paper also presents how to prevent bubbles.

Deep red photo selection method blanking die and die thermal insulation and electric heating to an aluminum plastic brittle transition temperature above

Pure eight key pieces often pass deep red 38mm diameter used in the manufacture of thin-walled tubes of 45mm length, blanking round billet diameter 13omm. To reduce cracking tendencies, aluminum and aluminum deep drawing process will be a key piece stamping tools plastic is heated to a brittle transition temperature. To reduce the impact and  Tungsten copper alloy  and delamination of the key blank blanking die was modified. Polishing the flat punch with a rounded "V"-shaped concave surface, the "V"-type concave. Aluminum blade to shear loads. Two deep red photo selection method blanking die and die thermal insulation and electric heating to an  sandblasted tungsten target  brittle transition temperature. With this tool on the flywheel screw press can be easily cleaned without generating cracks round billet and the blanking operation and less laborious. Pat sector found in a platinum sheet manufacturing, particularly during cold rolling, the occurrence of the event that the incorrect heat treatment of any form of recrystallized material will be suitable for deep drawing.