Annealing device

An annealing device and sensor technology, applied in the direction of furnace types, furnaces, heat treatment furnaces, etc., can solve the problems that the hardness cannot be reduced, the annealing effect cannot be achieved, and the comprehensive mechanical properties of the journal of this stage are affected, and the magnetic induction intensity can be enhanced. Effect

CN102808076AInactive Publication Date: 2012-12-05青岛德盛机械制造有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2012-12-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an annealing device. The annealing device comprises an annular sensor, wherein the annular sensor comprises an upper sensor and a lower sensor which is connected with the upper sensor. The annular sensor of the annealing device provided by the invention is divided into two layers, namely the upper sensor and the lower sensor, so that when the annealing device is powered on, two induced magnetic fields are generated. In the prior art, the magnetic field intensity, at the position R on the outer edge of the root of a threaded part, caused by a single magnetic field is weak; the two induced magnetic fields are distributed relatively uniformly on the threaded part and the position R on the outer edge of the root of the threaded part, namely the magnetic induction intensity at the position R of the outer edge of the root of the threaded part is enhanced, so that the position R of the outer edge of the root of the threaded part and the threaded part can reach an annealing temperature at the same time. Meanwhile, the annular sensor provided by the invention is divided into two layers, equivalently, a large magnetic field is divided into two small magnetic fields side by side; the distribution of the magnetic induction lines of the small magnetic fields are converged compared with that of the large magnetic field; and therefore, the heat affected zone of a higher stage neck journal caused by the annealing device is low.
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Description

technical field

[0001] The invention relates to the technical field of annealing, in particular to a crank partial annealing device. Background technique

[0002] Annealing is a metal heat treatment process, which refers to slowly heating the metal to a certain temperature, keeping it for a sufficient time, and then cooling it at an appropriate speed. The purpose is to reduce hardness, eliminate residual stress, stabilize size, reduce deformation and crack tendency, refine grain, adjust structure and eliminate structure defects.

[0003] Please refer to figure 1 , figure 1 Schematic diagram of the structure of the workpiece.

[0004] like figure 1 As shown, there is a product series in the crankshaft connecting rod assembly products. The crank is designed for carburizing and quenching of low-carbon alloy steel, and the surface hardness is 58~62HRC. The threaded part 11 of this design needs to be annealed to reduce the hardness and prevent the threaded part. The teeth of...

Examples

Embodiment Construction

[0032] The core of the present invention is to provide an annealing device, which can meet the annealing requirements at the outer edge R of the root and reduce the heat-affected zone of the upper journal.

[0033] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0034] Please refer to Figure 4 and Figure 5 , Figure 4 Schematic diagram of the annealing device annealing the workpiece provided by the present invention; Figure 5 It is a schematic di...