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在全国亿万军民热烈欢呼华国锋同志任中共中央主席、中央军委主席,热烈庆祝以华国锋主席为首的党中央一举粉碎王张江姚反党集委篡党夺权阴谋的伟大胜利的大喜日子里,国务院国防工办于一九七六年十一月在上海召开了《喷丸强化工艺技术交流推广会》。喷丸强化工艺是四十年代发展起来的一门比较成熟的工艺技术。喷丸强化就是使高速运动的弹丸流不断地向零件表面喷射,迫使金属表面产生强烈的塑性变形,即产生冷作硬化层,或叫表面强化层。从应力状态看,强化层内形成较高的残余压应力;从组织结构看强化层内形成密度极高的无序分布的位错,在交变应力或温度的作用下,强化层内逐渐形成微小的亚
Hundreds of thousands of soldiers and civilians across the country enthusiastically cheered Hua Guofeng as chairman of the CPC Central Committee and chairman of the Central Military Commission, and warmly celebrated the great joy of celebrating the great victory of the party Central Committee headed by Chairman Hua Guofeng at the stroke of crushing Wang Jiang’s anti-Party party and accelerating the plot to seize power and conquer power. In December 1976, the State Council’s National Defense Industry Office held the “Spray-peening Process Technology Promotion Conference” in Shanghai in November 1976. Shot peening is a mature technology developed in the 1940s. Shot peening is to make high-speed movement of the projectile continuously spraying the surface of the part, forcing the metal surface to produce a strong plastic deformation, that is, a cold hardening layer, or surface strengthening layer. From the stress state, high residual compressive stress is formed in the strengthening layer; from the organizational structure, dislocations with extremely high density and disorder distribution are formed in the strengthening layer, and gradually formed in the strengthening layer under the action of alternating stress or temperature. Tiny Asia