Method for producing a probe of a thermal flowmeter, probe of a thermal flowmeter, and thermal flowmeter

A method for producing a probe of a thermal flowmeter for measuring mass flow of a medium in a measuring tube, the method comprising:

• providing a probe core disposed loosely in a probe sleeve having a longitudinal axis;
• and
• deforming the probe sleeve completely radially relative to the longitudinal axis in the direction of the probe core using high energy rate forming such that a material-locking connection is formed between the probe sleeve and the probe core and a rod is produced,
• wherein the rod defines a base body, or a separated section of the rod defines the base body, from which base body a probe is manufactured,
• wherein a radial deformation speed of the high energy rate forming reaches values greater than 100 m/s, and wherein the high energy rate forming is performed using explosive forming,
• and wherein the explosive forming comprises the steps of placing an explosive substance on an outside surface of the probe sleeve and igniting the explosive substance.