CN217579000U - 23CrNi3Mo material hydraulic press bore bit shank heat treatment processingequipment - Google Patents

Abstract

The utility model discloses a 23CrNi3Mo material hydraulic press bore bit tail thermal treatment processingequipment, include: the hydraulic press drill bit tail, the carburizing furnace, the air cooling tower, the carburizing agent and the carburizing tempering furnace are arranged, the hydraulic press drill bit tail is arranged in a material tray, the material tray is hung in the carburizing furnace, and the carburizing furnace is connected with the carburizing agent through a pipeline.

Description

23CrNi3Mo material hydraulic press bore bit shank heat treatment processingequipment

Technical Field

The utility model discloses drill steel drilling tool heat treatment technical field specifically is a 23CrNi3Mo material hydraulic press bore bit tail heat treatment processingequipment.

Background

The drill bit shank of the hydraulic machine bears impact, tension and compression, bending and torsional stress in use, the using environmental condition is poor, the rock drilling environment is severe, according to the analysis of the working environment and failure mode of the drill bit shank of the hydraulic machine, the drill bit shank of the hydraulic machine has enough strength and toughness, high surface strength and wear resistance, fatigue resistance and certain corrosion resistance, and the core part has good toughness; the high-frequency impact and the powerful torsion of the rock drill can be borne; resist scouring of running water and corrosion of mine water.

At present, the domestic hydraulic machine drill rod tail has short service life and large service life fluctuation, can be used for about two to three kilometers in a good time, and can be out of service by using hundreds of meters in a bad time, and the hydraulic machine drill rod tail has complex working environment and high quality requirement. When the hydraulic press drill bit shank failure mode is used, the drill bit shank failure modes mainly include drill bit shank thread fracture, wing part end face top blasting, thread abrasion, water hole fracture and the like, and the quality of the drill bit shank is directly influenced by controlling the heat treatment process of the hydraulic press drill bit shank, so that the service life of the drill bit shank is seriously influenced.

This prior art solution also presents the following problems when in use:

1. in the prior art, the direct air-cooled quenching and tempering process after carburization is adopted, the grain size of the drill shank is large, the martensite and residual austenite levels of a carburized layer are high (reaching 4-6 levels), the service life of the drill shank is short, and the engineering construction is influenced;

2. the salt bath furnace heating, oil quenching and tempering processes after carburization have low production efficiency and long production period, and the salt bath has great pollution to the environment and does not meet the requirements of green environmental development.

Improvements are needed to address the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a 23CrNi3Mo material hydraulic press bore bit tail heat treatment processingequipment to solve the problem that above-mentioned background art provided.

In order to achieve the above object, the utility model provides a following technical scheme: a23 CrNi3Mo material hydraulic press bore bit shank heat treatment processingequipment includes: the hydraulic press drill rod tail is arranged inside a material tray, the material tray is hung into the carburizing furnace through a motor and a sliding rail, the bottom of the sliding rail is connected with a lifting appliance, the material tray is hung into the carburizing furnace, and the inside of the carburizing furnace is connected with the penetrating agent through a pipeline.

Preferably, the carburizing furnace supplies heat through fuel.

Preferably, the carburizing agent is injected into the interior of the carburizing furnace through a pipe.

Preferably, the air cooling tower dissipates heat through air cooling.

Preferably, the carburizing tempering furnace performs high-temperature tempering by using fuel.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the drill bit shank carburized by the hydraulic machine is subjected to primary quenching, then reheated for secondary air-cooled quenching, and finally tempered at low temperature, so that the production efficiency is effectively improved, the martensite and residual austenite levels of the drill bit shank carburized layer are reduced on the premise of reducing environmental pollution, and the grain size of a drill bit shank matrix is refined.

2. The structure grade of martensite and residual austenite of the drill shank carburized layer is reduced from 4-6 grade to 1-3 grade, and the structure grade is greatly reduced.

3. The grain size grade of the drill shank substrate is improved by 1-2 grades.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged view of the shank of the hydraulic press of the present invention;

fig. 3 is a schematic view of the operation flow structure of the present invention.

In the figure: 1-carburizing furnace, 2-air cooling tower, 3-bracket, 4-motor, 5-sling, 6-sliding rail, 7-material tray, 8-hydraulic press drill rod tail, 9-carburizing agent box, 10-carburizing tempering furnace.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a23 CrNi3Mo material hydraulic press bore bit shank heat treatment processingequipment includes: the hydraulic press drill rod tail 8, the carburizing furnace 1, the air cooling tower 2, the permeating agent box 9 and the carburizing tempering furnace 10, wherein the hydraulic press drill rod tail 8 is arranged inside a material tray 7, the material tray 7 is hung inside the carburizing furnace 1 through a motor 4 and a slide rail 6, the bottom of the slide rail 6 is connected with a lifting appliance 5, the material tray 7 is hung inside the carburizing furnace 1, the inside of the carburizing furnace 1 is connected with the permeating agent through a pipeline, the material tray 7 with the drill rod tail is hung inside the carburizing furnace 1 for heating, meanwhile, protective atmosphere is introduced into the carburizing furnace 1, and the permeating agent is injected.

In this example, the carburizing furnace 1 supplies heat by fuel.

In this example, the impregnation agent tank 9 injects an impregnation agent into the inside of the carburizing furnace through a pipe.

In this example, the air-cooled tower 2 dissipates heat by air cooling.

In the present example, the carburizing tempering furnace 10 performs high-temperature tempering by fuel.

The working principle is as follows: firstly, a carburizing step: loading a drill rod tail 8 of a hydraulic machine into a material tray 7, simultaneously heating a carburizing furnace 1 to 860 +/-20 ℃, hoisting the material tray 7 with the drill rod tail into the carburizing furnace 1 for heating, simultaneously introducing a protective atmosphere into the carburizing furnace 1, injecting a penetrating agent, when the temperature in the carburizing furnace 1 is heated to 920 +/-20 ℃ and the carbon potential is increased to 1.10 +/-0.10 percent to enter a strong penetration stage, preserving the temperature of the drill rod tail 8 of the hydraulic machine for 3-5 hours, then controlling the carbon potential to be reduced to 0.75 +/-0.10 percent to enter a diffusion stage, preserving the temperature of the drill rod tail 8 of the hydraulic machine for 1-3 hours, then reducing the temperature in the carburizing furnace 1 to 860 +/-20 ℃, and preserving the temperature of the drill rod tail 8 of the hydraulic machine for 1-2 hours;

primary quenching: hoisting the hydraulic press drill shank 8 processed by the steps out of the carburizing furnace 1 and then entering an air cooling tower 2 for air cooling quenching, slowly cooling for 15-40min at 200-350r/min, and then strongly cooling at 500-1000r/min to cool the drill shank to room temperature;

secondary heating and quenching: hoisting the hydraulic press drill rod tail 8 treated in the step 2 into the carburizing furnace 1 again for heating, introducing protective atmosphere into the carburizing furnace 1, injecting a penetrating agent, keeping the temperature of the hydraulic press drill rod tail 8 at 1-3h when the temperature in the carburizing furnace 1 is heated to 860 +/-20 ℃ and the carbon potential is increased to 0.75 +/-0.10%, hoisting the hydraulic press drill rod tail 8 out of the carburizing furnace 1, entering an air cooling tower 2 for air cooling quenching, slowly cooling for 15-40min at 200-350r/min, and then strongly cooling at 500-1000r/min to cool the hydraulic press drill rod tail to room temperature;

low-temperature tempering: and (3) hoisting the hydraulic press drill rod 8 processed in the step (3) into a carburizing tempering furnace 10 to be heated, preserving the heat of the hydraulic press drill rod 8 for 3-5h when the temperature in the carburizing tempering furnace 10 is heated to 200 +/-20 ℃, and then hoisting the hydraulic press drill rod 8 out of the carburizing tempering furnace 10 to be naturally cooled to the room temperature.

This is a characteristic of the heat treatment method for the drill bit shank of the hydraulic machine, and the content which is not described in detail in the present description belongs to the prior art which is well known to those skilled in the art.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims (5)

1. A23 CrNi3Mo material hydraulic press bore bit shank heat treatment processingequipment includes: hydraulic press bore bit tail (8), carburizing furnace (1), air-cooled tower (2), carburization tempering furnace (10) and penetrant case (9), its characterized in that: the hydraulic press drill rod tail (8) is arranged inside the material tray (7), the material tray (7) is hung into the carburizing furnace (1) through the motor (4) and the sliding rail (6), the bottom of the sliding rail (6) is connected with the lifting appliance (5), and the inside of the carburizing furnace (1) is connected with the penetrating agent box (9) through a pipeline.

2. The heat treatment processing device for the 23CrNi3Mo hydraulic press drill shank according to claim 1, characterized in that: the carburizing furnace (1) supplies heat through fuel.

3. The heat treatment processing device for the 23CrNi3Mo hydraulic press drill shank according to claim 1, characterized in that: and the impregnation agent in the impregnation agent box (9) is injected into the carburizing furnace (1) through a pipeline.

4. The heat treatment processing device for the 23CrNi3Mo hydraulic press drill shank according to claim 1, characterized in that: the air cooling tower (2) dissipates heat through air cooling.

5. The 23CrNi3Mo hydraulic press drill shank heat treatment processing device according to claim 1, characterized in that: the carburizing tempering furnace (10) performs high-temperature tempering through fuel.

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