CN217377963U

CN217377963U - Inductor for crankshaft fillet quenching

Info

Publication number: CN217377963U
Application number: CN202220299120.6U
Authority: CN
Inventors: 毛晓峰; 邓诗贵; 梁毅龙; 周雷; 骆玉城
Original assignee: Guilin Fuda Crankshaft Co ltd
Current assignee: Guilin Fuda Crankshaft Co ltd
Priority date: 2022-02-15
Filing date: 2022-02-15
Publication date: 2022-09-06
Anticipated expiration: 2032-02-15

Abstract

The utility model discloses an inductor for crankshaft fillet quenching, which comprises an inductor body, a liquid spraying device and a shunt pipe; the liquid spraying device is connected with a quenching liquid cooling pipe on the inductor body through a shunt pipe; the liquid spraying device comprises a nozzle, a liquid spraying box and a pipeline interface; the liquid spray box is hollow, two opposite side surfaces are provided with nozzles, and the top surface is provided with a pipeline interface; the liquid spraying box is arranged above the heating coil of the inductor body; one end of the shunt pipe is connected with a pipeline interface on the top surface of the liquid spraying box, and the other end of the shunt pipe is connected with the quenching liquid cooling pipe. The utility model discloses a set up the hydrojet device above the heating coil of inductor body for when the bent axle cools off after the quenching heating, the quenching liquid can direct injection fillet and circular bead department, thereby improves bent axle fillet and circular bead cooling effect, and it is poor to have solved traditional quenching inductor fillet cooling effect, quenches fillet metallography, hardness, effectively quenches the not good problem of hardened layer degree of depth.

Description

Inductor for crankshaft fillet quenching

Technical Field

The utility model relates to the technical field of quenching, in particular to an inductor for quenching a crankshaft fillet.

Background

Quenching is a heat treatment process in which steel is heated to a temperature above the critical temperature, held for a certain period of time, and then cooled at a rate greater than the critical cooling rate to obtain an unbalanced structure mainly composed of martensite (or bainite or single-phase austenite is obtained as necessary). Quenching is the most widely used work technology method in the heat treatment process of steel.

The quenching inductor is a terminal device for heating a quenching workpiece by utilizing an induction heating principle. According to different heating frequencies, the induction heating furnace is divided into a medium-frequency quenching inductor and a high-frequency quenching inductor.

The fatigue strength of the crankshaft, which is one of the most important parts in an engine, determines the service life of the engine. When the engine works, due to structural reasons, stress concentration is easily generated at the round corners, the largest working stress is received, and most of crankshaft failures are concentrated at the round corners. The mass at the fillets determines the strength of the crankshaft. The metallographic structure, the hardness and the effective hardening layer depth are important indexes for crankshaft quality evaluation, and the strength of the crankshaft is determined. The traditional liquid spraying device of the inductor only has liquid spraying ports on two sides and can only spray water on the surface of a shaft neck in an aligning way, and the cooling effect of a fillet and a circular bead is not ideal, so that the metallographic phase, the hardness and the effective hardening layer depth of the fillet or the circular bead after the crankshaft is quenched are not ideal, and the fatigue strength is insufficient.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model discloses an inductor for bent axle fillet quenches can improve bent axle fillet and circular bead cooling effect, improves fillet department metallographic structure, hardness and effective hardening layer degree of depth, and it is poor to have solved traditional quenching inductor fillet cooling effect, quenches fillet metallographic, hardness, the not good problem of effective hardening layer degree of depth.

The utility model adopts the following technical proposal:

an inductor for crankshaft fillet quenching comprises an inductor body, a liquid spraying device and a flow dividing pipe; the liquid spraying device is connected with a quenching liquid cooling pipe on the inductor body through a shunt pipe;

the liquid spraying device comprises a nozzle, a liquid spraying box and a pipeline interface; the liquid spray box is hollow, two opposite side surfaces are provided with nozzles, and the top surface is provided with a pipeline interface; the liquid spraying box is arranged above the heating coil of the inductor body; one end of the shunt pipe is connected with a pipeline interface on the top surface of the liquid spraying box, and the other end of the shunt pipe is connected with the quenching liquid cooling pipe.

The utility model discloses a further explanation, the spout set up in the bottom of the side of the spray box; the nozzle is downward inclined and forms an included angle of 30-60 degrees with the side face of the liquid spraying box. The nozzle is arranged at the bottom of the side surface of the liquid spraying box, so that quenching liquid can be conveniently and completely sprayed out of the liquid spraying box; the nozzles are inclined downwards, the included angle between the nozzles and the side face of the liquid spraying box is 30-60 degrees, and when quenching liquid is sprayed out, the quenching liquid can be directly sprayed towards fillets and shoulders on two sides of a crankshaft journal in an inclined downwards mode, and the quenching effect is further improved.

The utility model discloses a explain further, the spout be the rectangle of horizontal setting, the long limit of rectangle is parallel with the base of hydrojet box. The nozzle is a rectangle transversely arranged, when the quenching liquid is sprayed out from the nozzle, the sprayed transverse area is larger, and the contact area of the quenching liquid and the crankshaft can be increased.

The utility model discloses a further explain, the top of heating coil of inductor body both sides set up 1 hydrojet box respectively. The top of the heating coil of inductor body both sides set up 1 hydrojet box respectively, when quenching cooling, the quenching liquid is at the bilateral symmetry blowout of inductor body for the cooling effect is more even.

The utility model discloses a theory of operation:

the shunt pipe is used for leading the quenching liquid from the quenching liquid cooling pipe to the liquid spray box. When the crankshaft is cooled after quenching and heating, quenching liquid is respectively sprayed out from the spraying device of the traditional quenching inductor and the nozzles on the side surfaces of the spraying box. Quenching liquid sprayed from a liquid spraying device of a traditional quenching inductor can cool the shaft neck of the crankshaft; the quenching liquid sprayed from the nozzles on the side surface of the liquid spraying box can be directly sprayed to the fillets and shoulders on two sides of the crankshaft journal, and the cooling effect of the fillets and the shoulders of the crankshaft is improved.

The utility model has the advantages that:

1. the utility model discloses a heating coil top at the inductor body sets up liquid spray device, and be connected to the quenching liquid cooling tube through the shunt tubes with liquid spray device, make the bent axle when cooling down after the quenching heating, the quenching liquid can direct injection fillet and circular bead department, thereby improve bent axle fillet and circular bead cooling effect, improve fillet department metallographic structure, hardness and effective hardening layer degree of depth, it is poor to have solved traditional quenching inductor fillet cooling effect, quenching fillet metallographic, hardness, the not good problem of effective hardening layer degree of depth.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a cross-sectional view of a spray cartridge of the present invention;

fig. 3 is a side view of the spray cartridge of the present invention.

The attached drawings are as follows: 1-a traditional inductor liquid spraying device, 2-a liquid spraying device, 3-a heating coil, 4-a quenching liquid cooling pipe, 5-a shunt pipe, 6-a nozzle, 7-a liquid spraying box, 8-a pipeline interface and 9-an inductor body.

Detailed Description

The present invention will be further described with reference to the following specific embodiments and accompanying drawings.

Example 1:

the inductor for crankshaft fillet quenching comprises an inductor body 9, a liquid spraying device 2 and a shunt pipe 5; the liquid spraying device 2 is connected with a quenching liquid cooling pipe 4 on the inductor body 9 through a shunt pipe 5;

the liquid spraying device 2 comprises a nozzle 6, a liquid spraying box 7 and a pipeline interface 8; the liquid spraying box 7 is hollow, two opposite side surfaces are provided with nozzles 6, and the top surface is provided with a pipeline interface 8; the liquid spraying box 7 is arranged above the heating coil 3 of the inductor body 9; one end of the shunt pipe 5 is connected with a pipeline interface 8 on the top surface of the spray box 7, and the other end is connected with the quenching liquid cooling pipe 4.

The working principle of the embodiment is as follows:

the shunt pipe 5 is used for leading the quenching liquid from the quenching liquid cooling pipe 4 to the spraying liquid box 7. When the crankshaft is cooled after quenching and heating, quenching liquid is respectively sprayed from nozzles 6 on the side surfaces of the traditional inductor liquid spraying device 1 and the liquid spraying box 7. Quenching liquid sprayed from the conventional sensor liquid spraying device 1 can cool the shaft neck of the crankshaft; the quenching liquid sprayed from the nozzles 6 on the side surface of the liquid spraying box 7 can be directly sprayed to the fillets and shoulders on the two sides of the crankshaft journal, so that the cooling effect of the fillets and the shoulders of the crankshaft is improved.

Example 2:

this embodiment differs from embodiment 1 in that: the nozzle 6 is arranged at the bottom of the side surface of the liquid spraying box 7; the nozzle 6 is inclined downwards, and the included angle between the nozzle and the side surface of the liquid spraying box 7 is 30 degrees. The nozzle 6 is arranged at the bottom of the side surface of the liquid spraying box 7, so that the quenching liquid can be conveniently sprayed out of the liquid spraying box 7 completely; the nozzle 6 is inclined downwards, and when the quenching liquid is sprayed out, the quenching liquid can be directly sprayed to fillets and shoulders on two sides of the crankshaft journal downwards in an inclined way, so that the quenching effect is further improved.

The working principle of this embodiment is the same as that of embodiment 1.

Example 3:

this embodiment differs from embodiment 2 in that: the nozzle 6 is a rectangle transversely arranged, and the long side of the rectangle is parallel to the bottom side of the liquid spraying box 7. The included angle between the nozzle 6 and the side surface of the liquid spraying box 7 is 45 degrees. The nozzle 6 is a rectangle transversely arranged, when the quenching liquid is sprayed out from the nozzle, the sprayed transverse area is large, and the contact area of the quenching liquid and the crankshaft can be increased.

The working principle of this embodiment is the same as embodiment 1.

Example 4:

this embodiment differs from embodiment 3 in that: and 1 liquid spraying box 7 is respectively arranged above the heating coils 3 at two sides of the inductor body 9. The included angle between the nozzle 6 and the side surface of the liquid spraying box 7 is 60 degrees. 1 spray box 7 is respectively arranged above the heating coils 3 on two sides of the inductor body 9, and when quenching and cooling are carried out, quenching liquid is symmetrically sprayed out on two sides of the inductor body 9, so that the cooling effect is more uniform.

The working principle of this embodiment is the same as that of embodiment 1.

The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the protection scope of the present invention is defined by the claims. Various modifications and equivalents of the invention may be made by those skilled in the art within the spirit and scope of the invention, and such modifications and equivalents should also be considered as falling within the scope of the invention.

Claims

1. An inductor for crankshaft fillet quenching, comprising an inductor body (9), characterized in that: the device also comprises a liquid spraying device (2) and a shunt pipe (5); the liquid spraying device (2) is connected with a quenching liquid cooling pipe (4) on the inductor body (9) through a shunt pipe (5);

the liquid spraying device (2) comprises a nozzle (6), a liquid spraying box (7) and a pipeline interface (8); the liquid spraying box (7) is hollow, two opposite side surfaces are provided with nozzles (6), and the top surface is provided with a pipeline connector (8); the liquid spraying box (7) is arranged above the heating coil (3) of the inductor body (9); one end of the shunt pipe (5) is connected with a pipeline interface (8) on the top surface of the liquid spraying box (7), and the other end is connected with the quenching liquid cooling pipe (4).

2. The inductor for crankshaft fillet quenching as set forth in claim 1, wherein: the nozzle (6) is arranged at the bottom of the side surface of the liquid spraying box (7); spout (6) downward sloping, and be 30 ~ 60 with the contained angle of hydrojet box (7) side.

3. The inductor for crankshaft fillet quenching as set forth in claim 1, wherein: the nozzle (6) is a rectangle transversely arranged, and the long edge of the rectangle is parallel to the bottom edge of the liquid spraying box (7).

4. The inductor for crankshaft fillet quenching as set forth in claim 1, wherein: 1 liquid spraying box (7) is respectively arranged above the heating coils (3) at two sides of the inductor body (9).