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2.技术要求(1)在压入缸体前其外表面的椭圆度及锥度,不得大于0.5毫米(在自由状态下测量)。(2)整形后允许对口处有不大于0.4毫米的间隙。(3)镀锡层厚度为0.002～0.004毫米,镀锡层厚度尺寸不包括在尺寸要求范围内。
2. Technical requirements (1) Before the cylinder into the outer surface of the ovality and taper, not more than 0.5 mm (measured in the free state). (2) allow the counterparts after shaping no less than 0.4 mm gap. (3) tin layer thickness of 0.002 to 0.004 mm, tin layer thickness size is not included in the size requirements.