Question

When entire piping assembly to be heat treated cannot fit into the furnace, it is permissible to heat treat in more than one heat, provided there is at least ____ overlap between successive heats! and that parts of the assembly outside of the furnace are protected from harmful temperature gradients.

Answer 1

The question involves the heat treatment of piping assemblies in sections and the requirement of an overlap between heats to prevent harmful temperature gradients, which is a common practice in engineering processes.

Step-by-step explanation:

The subject of the student's question refers to the heat treatment of pipes when they cannot fit entirely into a furnace and need to be heat treated in sections with an overlap. The overlap ensures uniform temperature and minimizes harmful temperature gradients. This is a practice common in industrial processes and engineering, particularly when working with assembly parts and piping systems.

The specified overlap dimension is not provided in the question or references given, which suggests that the answer should be based on standard industry practices, specifications from a given engineering standard, or the procedures of the manufacturing entity.The question involves the heat treatment of piping assemblies in sections and the requirement of an overlap between heats to prevent harmful temperature gradients, which is a common practice in engineering processes.