| 摘要 |
A method for cold forming a flattened, end-threaded rod (10) into a U-bolt (20) answers the need for high-strength steel rods that can be bent into flattened U-bolts by spring and suspension repair facilities or the like. By controlling the amount of work put into the end-threaded flattened rod (10) during bending, it is possible to manufacture a flattened, end-threaded rod from a high-strength steel that can be successfully cold bent into a U-bolt (20). The amount or degree of flattening and the radius of the U-bolt are variables which applicant controls to successfully cold bend a high-strength steel flattened rod (10) into a U-bolt (20). Therefore the spring and suspension repair facility avoids the need to heat the flattened rods for wa rm forming and, instead, can maintain an inventory of end-threaded and flattene d rods for cold forming into flattened U-bolt comply with OEM designs when modifying or repairing vehicles.
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