研究了试板体积、熔敷层长度、搭接量、熔敷层搭接道数及压板拘束对熔敷层裂纹率的影响,结果表明随试板体积增大、熔敷层长度增加、搭接量增大和熔敷层搭接道数增多,熔敷层裂纹率升高.压板及冷却水的拘束作用也使熔敷层裂纹率升高.分析并比较了上述工艺因素作为熔敷层抗裂性判据的优劣,其中熔敷层道数对裂纹率影响更加直观、简便和准确,最终获得了评定熔敷层抗裂性优劣的最佳判据和补充判据.
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