Titanium plate stainless steel head belongs to a kind of stainless steel dish end, mainly used to seal the stainless steel vessels. In the process of its manufacture, there is a process that requires special care, which is the heat treatment process. During the heat treatment of the stainless steel head of titanium plate, thermal stress is easy to occur. The reason is that during the heating and cooling process, the cooling rate and time of the surface layer and the core are inconsistent, and it is a temperature difference.
In addition, structural stress is relatively easy to occur, mainly due to the change in structure, that is, the transformation of austenite to martensite, because the increase of the specific volume will accompany the expansion of the workpiece volume, and the various parts of the workpiece phase change, resulting in inconsistent volume growth.
The thermal stress and microstructural stress generated during the heat treatment of the stainless steel head of titanium plate, whether cancelling each other or overlapping each other, will have a dominant factor. When thermal stress is dominant, the result is that the core of the workpiece is pulled and the surface is compressed. When the tissue stress is dominant, the compressive surface of the workpiece core is pulled.
The general production process of titanium plate stainless steel head is: material feeding, physical and chemical, material cutting, product hot forging, product heat treatment; the general inspection steps are product inspection, product finishing, and inspection of the end product , Marking, re-finished product inspection, re-marking; packaging steps: typing before packaging, and then shipping.