Seamless steel tube quenching equipment
By connecting the conveyor module in series with the heating furnace and utilizing the staggered arrangement of guide rollers and the arc-shaped pipe oil spraying design, the problem of low efficiency in the quenching of seamless steel pipes is solved, achieving temperature consistency and quenching uniformity, and simplifying the production process.
Patent Information
- Application Number
- CN202520370904.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-04
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-03-04
AI Technical Summary
In the existing seamless steel pipe quenching process, vertical hoisting leads to low production efficiency and makes it difficult to ensure temperature consistency and uniformity of quenching oil in different parts.
The conveying module is connected in series with the heating furnace. Through the staggered arrangement of guide rollers and the self-rotation conveying, combined with the design of the arc-shaped oil spray nozzle, the seamless steel pipe is obliquely conveyed and rotated, ensuring temperature consistency and uniform contact of quenching oil.
It improves quenching efficiency, ensures temperature consistency in all parts of the seamless steel pipe and consistency of surface hardening after quenching, simplifies the production process, and reduces equipment hoisting steps.
Smart Images
Figure CN223906903U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a quenching equipment, especially a seamless steel pipe quenching equipment. BACKGROUND
[0002] Seamless steel pipes need to be quenched during production to enhance their physical and chemical properties, meeting the requirements of high strength, high hardness, high wear resistance and deformation resistance in specific application scenarios. Quenching can refine the grain of the seamless steel pipe, improve its hardness and strength, and increase its toughness and impact resistance, making it more suitable for use in high-load and high-pressure working conditions.
[0003] The existing quenching process of seamless steel pipes generally involves heating the pipes to a predetermined temperature in an electric furnace and then slowly immersing the bundled pipes vertically into quenching oil using lifting equipment. The pipes are usually heated horizontally through the electric furnace on an assembly line, but the quenching process requires vertical immersion because the pipes are long and horizontal quenching can easily cause bending deformation due to gravity. To ensure the straightness of the pipes, vertical lifting is used for quenching, but this results in low quenching efficiency. SUMMARY
[0004] The utility model provides a kind of seamless steel pipe quenching equipment;Solve the problem that the production efficiency becomes low in prior art because seamless steel pipe is quenched using vertical lifting process.
[0005] The utility model discloses a technical problem above mainly is solved through following technical scheme: a seamless steel tube quenching equipment, including frame, transmission module and quenching subassembly, be equipped with the support plate for supporting transmission module of frame, splash baffle and oil storage groove, the splash baffle cover is equipped on the upside of support plate, and the both sides define the quenching area, transmission module penetrates the quenching area, the support plate in the quenching area is the porous structure, and the oil storage groove is located the support plate below of quenching area, transmission module is by a plurality of first guide roller, a plurality of second guide roller and guide roller support frame structure, be equipped with the motor of drive corresponding guide roller isomeric rotation on the guide roller support frame, first guide roller and second guide roller staggered arrangement in proper order, in the overhead direction, the axial parallel of first guide roller and second guide roller and with the transmission direction of transmission module is set up the acute angle, in transmission direction visual angle, first guide roller and second guide roller are " V " type or " X " type distribution, the upside of two guide rollers forms the transmission groove that can hold the seamless steel tube, the rotation direction of two guide rollers and the transmission direction of seamless steel pipe contact part is consistent and all is acute angle, the quenching subassembly includes oil pump, oil pipe and a plurality of arc pipes, the input end of oil pipe is connected with the oil storage groove, oil pipe still divides two vice oil pipes, the output end of two vice oil pipes and both ends of all arc pipes are connected, the oil pump is connected in series on the main pipeline of oil pipe, the arc pipe is surrounded and fixed on the outside of transmission groove, be equipped with a plurality of oil injection ports of the transmission groove on the arc pipe.
[0006] The transmission module of the utility model can be connected in series with the output end of the existing seamless steel pipe heating electric furnace, so that the heated seamless steel pipe can be directly transferred to the utility model, and the step of hoisting in bundles is saved. Meanwhile, the transmission module in the utility model can generate a diagonal thrust on the seamless steel pipe, so that the seamless steel pipe will move backward along the transmission groove while rotating, and such transmission effect can avoid the same part of the seamless steel pipe repeatedly contacting the guide roller, and can also avoid the situation that the temperature of the same part of the seamless steel pipe is lower than the critical value of austenitizing temperature before quenching due to long-time contact with the guide roller, so as to better ensure the temperature consistency of each part of the seamless steel pipe before quenching. Then, when the seamless steel pipe moves into the quenching area, the oil injection ports on the arc pipe will spray quenching oil from all directions, so as to quench the seamless steel pipe, and the seamless steel pipe also has a self-rotation effect under the conveying of the transmission module, so that the contact with the quenching oil is more uniform, and the surface hardening consistency after quenching is further improved. The quenching oil will return to the oil storage groove through the support plate after quenching, realizing recycling.
[0007] Furthermore, the bottom of the oil storage tank is inclined, with a drain pipe and valve connected to the lowest side. An electromagnetic three-way valve and a replenishment pipe are also connected to the main oil supply pipe, and a filter head is installed at the port of the oil supply pipe. The quenching oil needs to be replaced after a period of use, and solid impurities will accumulate in the oil storage tank over time, thus requiring regular replacement. When replacement is needed, the valve on the drain pipe can be opened first to drain the liquid from the oil storage tank. After complete drainage, the electromagnetic three-way valve can be switched to connect the main oil supply pipe to the replenishment pipe, allowing the replenishment pipe to enter the oil storage tank. At this point, the valve is not closed; the newly injected quenching oil is used to flush the bottom of the oil storage tank. The inclined bottom of the tank allows solid impurities to be more easily discharged from the drain pipe along with the liquid flow. After flushing for a period of time, the valve is closed to allow oil storage.
[0008] Therefore, this utility model has the following characteristics compared with the prior art: 1. The conveying module can be connected in series with the output end of the existing seamless steel pipe heating electric furnace, so that the heated seamless steel pipe can be directly transferred to this utility model, eliminating the step of bundled hoisting and simplifying the production process; 2. Under the action of the conveying module, the seamless steel pipe will move backward along the conveying groove while rotating on its own, avoiding repeated contact between the same part of the seamless steel pipe and the guide roller, which can better ensure the temperature consistency of each part of the seamless steel pipe before quenching. Attached Figure Description
[0009] Appendix Figure 1 This is a schematic diagram of the structure of this utility model;
[0010] Appendix Figure 2 This is a schematic diagram of the transmission module.
[0011] Appendix Figure 3 This is a structural schematic diagram of the support frame;
[0012] Appendix Figure 4 This is a structural schematic diagram of the quenching assembly. Detailed Implementation
[0013] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.
[0014] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is the orientation or positional relationship shown based on the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.
[0015] Example 1: see Figure 1 、 Figure 2 and Figure 4 A seamless steel tube quenching device, comprising a rack 100, a conveying module 200 and a quenching assembly 300; The rack is provided with a supporting plate 110 for supporting the conveying module, a splash-proof cover plate 120 and an oil storage groove 130, the splash-proof cover plate is arranged on the upper side of the supporting plate, and a quenching area 140 is defined between the two, the conveying module penetrates the quenching area, the supporting plate in the quenching area is of a porous structure, the supporting plate is concave in the middle, and the oil storage groove is located below the supporting plate in the quenching area; The conveying module is composed of a plurality of first guide rollers 210, a plurality of second guide rollers 220 and a guide roller support frame 230, a motor 240 for driving corresponding guide rollers to rotate at the same speed is arranged on the guide roller support frame, the first guide rollers and the second guide rollers are arranged alternately and staggeredly, in the top view direction, the axial directions of the first guide rollers and the second guide rollers are parallel and are arranged at an acute angle with the conveying direction of the conveying module, the angle is between 60° and 80°, in the conveying direction view, the first guide rollers and the second guide rollers are distributed in the shape of "V" or "X", conveying grooves 250 capable of accommodating seamless steel pipes 10 are formed on the upper sides of the two guide rollers, the rotation directions of the contact parts of the two guide rollers with the seamless steel pipes are consistent with the conveying direction of the seamless steel pipes and are both acute angles; The quenching assembly comprises an oil pump 310, an oil conveying pipe 320 and a plurality of arc-shaped pipes 330, the input end of the oil conveying pipe is connected with the oil storage groove, the oil conveying pipe further branches into two auxiliary oil conveying pipes, the output ends of the two auxiliary oil conveying pipes and the two ends of all the arc-shaped pipes are connected, the oil pump is connected in series on the main pipeline of the oil conveying pipe, the arc-shaped pipes are fixed around the outer side of the conveying groove, and a plurality of oil injection ports 340 opposite to the conveying groove are arranged on the arc-shaped pipes.
[0016] The conveying module on the embodiment can be connected in series with the output end of the existing seamless steel pipe heating electric furnace of the seamless steel pipe, so that the heated seamless steel pipe can be directly transferred to the embodiment, and the step of hoisting in bundles is omitted. Meanwhile, the conveying module in the embodiment can generate a diagonal pushing force on the seamless steel pipe, so that the seamless steel pipe moves backward along the conveying groove while self-rotating. Such a conveying effect can avoid the same part of the seamless steel pipe repeatedly contacting the guide roller, and can avoid the situation that the temperature of the same part of the seamless steel pipe is lower than the critical value of the austenitizing temperature before quenching due to long-time contact with the guide roller, so as to better ensure the temperature consistency of each part of the seamless steel pipe before quenching. Then, when the seamless steel pipe moves into the quenching area, the oil injection ports on the arc-shaped pipe will spray quenching oil from all directions to quench the seamless steel pipe. Moreover, the seamless steel pipe has a self-rotation effect under the conveying of the conveying module, so that the contact with the quenching oil is more uniform, and the surface hardening consistency after quenching is further improved. The quenching oil after quenching can return to the oil storage tank through the supporting plate to realize recycling.
[0017] See Figure 1 and Figure 4 The bottom of the oil storage tank is inclined, and the lowest side is connected with a liquid discharge pipe 131 and a valve 132. The main pipe of the oil supply pipe is also connected with an electromagnetic three-way valve 133 and a liquid supplement pipe 134. The port of the oil supply pipe is also provided with a filter head 135. The quenching oil needs to be replaced after being used for a period of time, and some solid impurities will also accumulate in the oil storage tank after long-term use. Therefore, the quenching oil in the oil storage tank needs to be replaced regularly. When replacement is needed, the valve on the liquid discharge pipe can be opened first, and the liquid in the oil storage tank can be discharged. After complete discharge, the electromagnetic three-way valve can be switched to a state in which the main pipe of the oil supply pipe is connected with the liquid supplement pipe. In this way, the liquid supplement pipe can enter the oil storage tank. At this time, the valve is not closed first, and the bottom of the oil storage tank is flushed with the newly injected quenching oil. The inclined state of the bottom of the oil storage tank can make the solid impurities more easily flow out of the liquid discharge pipe. After a period of time, the valve is closed to store the oil.
[0018] See Figure 3 The supporting plate is also fixed with two pairs of support frames 140. The upper side of the support frame is provided with a plurality of positioning grooves 141. The same arc-shaped pipe can be clamped in the two positioning grooves on the two pairs of support frames at the same time.
[0019] It is obvious to those skilled in the art that the present application can be changed in various ways. Such changes are not considered to be beyond the scope of the present application. All such modifications obvious to those skilled in the art shall be included in the scope of the present claim.
Claims
1. A seamless steel tube quenching apparatus characterized by comprising: The application relates to a seamless steel pipe quenching device, which comprises a rack, a conveying module and a quenching assembly; the rack is provided with a supporting plate for supporting the conveying module, a splash-proof cover plate and an oil storage groove; the splash-proof cover plate is arranged on the upper side of the supporting plate, and a quenching area is defined between the splash-proof cover plate and the supporting plate; the conveying module penetrates through the quenching area; the supporting plate in the quenching area is of a porous structure; and the oil storage groove is arranged below the supporting plate in the quenching area; the conveying module is composed of a plurality of first guide rollers, a plurality of second guide rollers and a guide roller support frame; a motor for driving corresponding guide rollers to rotate at the same speed is arranged on the guide roller support frame; the first guide rollers and the second guide rollers are arranged in a staggered mode; in the top view direction, the axial directions of the first guide rollers and the second guide rollers are parallel to each other and are arranged at an acute angle with the conveying direction of the conveying module; in the conveying direction view, the first guide rollers and the second guide rollers are arranged in a "V" type or an "X" type; the upper sides of the two guide rollers are formed with conveying grooves for accommodating the seamless steel pipes; the rotation directions of the contact positions of the two guide rollers with the seamless steel pipes are consistent with the conveying direction of the seamless steel pipes and are both acute angles; the quenching assembly comprises an oil pump, an oil conveying pipe and a plurality of arc-shaped pipes; the input end of the oil conveying pipe is connected with the oil storage groove; the oil conveying pipe is branched into two sub-oil conveying pipes; the output ends of the two sub-oil conveying pipes and the two ends of all the arc-shaped pipes are connected; the oil pump is connected in series on the main pipeline of the oil conveying pipe; the arc-shaped pipes are fixed around the outer side of the conveying grooves; and a plurality of oil injection ports opposite to the conveying grooves are arranged on the arc-shaped pipes.
2. The seamless steel tube quenching apparatus according to claim 1, characterized by: The bottom of the oil storage groove is of an inclined structure; a drainage pipe and a valve are connected to the lowest side; an electromagnetic three-way valve and a liquid supplementing pipe are further connected to the main pipeline of the oil conveying pipe; and a filter head is further arranged at the port of the oil conveying pipe.
3. The seamless tube quenching apparatus according to claim 1, characterized by: Two pairs of support frames are further fixed on the supporting plate; a plurality of positioning grooves are arranged on the upper side of the support frames; and one arc-shaped pipe can be clamped in two positioning grooves on the two pairs of support frames at the same time.
4. The seamless steel tube quenching apparatus according to claim 3, characterized by: The supporting plate is concave in the middle.