CN105586471B - A kind of process for quenching of metal processing piece - Google Patents

Abstract

A method for quenching metal processed parts, comprising the following steps: 1. Opening the quenching furnace through a program-controlled control device; Automatically input the program-controlled control device, the program-controlled control device is automatically controlled in the corresponding controller according to the process parameters; 3. After being measured by the metering device, the protective gas is passed into the quenching furnace through the pipeline, and the protective gas is methanol and toluene The mixed gas formed after entering the quenching furnace through their respective pipes; 4. Place the workpiece to be quenched on the conveying mesh belt that can circulate in the quenching furnace; 5. Start the conveying mesh belt to perform quenching operation. Its advantages are: improving the service life of the conveying mesh belt, lower production cost, high degree of production automation, better quenching effect of processed parts, and can be used for quenching processing of various processed parts, including the alarm device step, and timely alarm when problems occur. The production process is safer.

Description

A kind of quenching method of metal processing parts

technical field

The invention relates to the technical field of heat treatment of processed parts, in particular to a quenching method for metal processed parts.

Background technique

An existing application number CN201120535836.3 is a Chinese utility model patent named "Mesh Belt Furnace Conveying Mesh Belt", which discloses a mesh belt furnace conveying mesh belt for conveying materials, which can improve the service life of the mesh belt. The mesh belt furnace conveying mesh belt includes a mesh belt and side pulleys arranged on both sides of the mesh belt, the mesh belt is connected with a mesh belt transmission device, and at least one mesh belt supporting track is arranged under the middle part of the mesh belt. The mesh belt support track can form a support for the mesh belt, avoiding the deformation of the mesh belt by the material on the mesh belt, thereby improving the service life of the mesh belt; The width of the mesh belt is set according to the amount of material. The more materials that need to be transported per unit time, the wider the width of the mesh belt should be set. Just increase the number of mesh belt support tracks, so as to ensure the transmission of materials and benefit The normal operation of production is especially suitable for promotion and use on material conveying mesh belts. However, the conveying mesh belt of the invention has a short service life, and therefore, it is necessary to further improve the mesh belt.

content of the invention

The technical problem to be solved by the present invention is to provide a quenching method for metal processing parts with simple process, safe operation and long service life of the conveying mesh belt in view of the above-mentioned current state of the art.

The technical solution adopted by the present invention to solve the above-mentioned technical problems is: the quenching method of the metal processed parts, which is characterized in that it includes the following steps: 1. Open the quenching furnace through the program-controlled control device; 2. Manually input the code of the processed part into the program-controlled control device Or use a scanner to scan the barcode of the process card to automatically input the process parameters of the workpiece into the program-controlled control device, and the program-controlled control device performs automatic control in the corresponding controller according to the process parameters; 3. After the protective gas is measured by the metering device Pass into the quenching furnace through the pipeline, and the protective gas is the mixed gas formed after methanol and toluene are respectively passed into the quenching furnace through their respective pipelines; 4. Place the workpiece to be quenched on the conveying network that can circulate in the quenching furnace 5. Start the conveying mesh belt for quenching operation.

As an improvement, the methanol and toluene are liquid methanol and liquid toluene, and the inflow ratio of the liquid methanol to liquid toluene is 4:1.

As a further improvement, the methanol flows into the quenching furnace through the methanol inflow pipe, and there are 4 methanol inflow pipes, and the inflow rate of each methanol inflow pipe is 1.5 liters/hour, and the toluene flows into the quenching furnace through the toluene inflow pipe, and the There were 3 toluene inlet pipes, and the inflow rate of each toluene inlet pipe was 0.5 liter/hour.

As a further improvement, the metering device is a flowmeter, and the flowmeters are respectively arranged on the methanol inflow pipe and the toluene inflow pipe, and the flowmeter is connected to the program control device through a line.

As an improvement, the conveying mesh belt is placed on a rotatable idler roller, one part of the conveying mesh belt is located in the quenching furnace, and the other is located outside the quenching furnace, and the temperature of the furnace cavity in the quenching furnace is controlled at 870-930°C , the temperature of the conveying mesh belt located in the quenching furnace is also 870-930°C, and the temperature of the conveying mesh belt located outside the quenching furnace is controlled at 50-200°C.

As a further improvement, the cycle time of the conveying mesh belt is 120-180 minutes.

As a further improvement, the cycle time of the conveying mesh belt is 150 minutes, the time of the conveying mesh belt in the furnace chamber is 100 minutes, and the time of the conveying mesh belt outside the furnace chamber is 50 minutes.

As a further improvement, the mesh of the conveying mesh belt is diamond-shaped, rectangular, circular or triangular, and the diameter of the mesh is smaller than the width of the workpiece when it is placed horizontally.

As an improvement, the program-controlled control device includes a monitoring device, and the monitoring device includes an environmental sensor capable of detecting various parameters corresponding to the code of the workpiece, a position sensor capable of monitoring the specific position of the workpiece in the quenching furnace, and a sensor capable of detecting Whether the quenching furnace, the methanol inflow pipe, the toluene inflow pipe, and the conveying mesh belt are in operation state, the environment sensor, the position sensor and the equipment sensor are respectively connected with the control processor in the program-controlled control device through lines, and the control The processor is connected to the display.

As a further improvement, the program-controlled control device is connected to the alarm device through a line, and when the environmental sensor detects abnormal parameters or the equipment sensor detects that the corresponding equipment stops working, the program-controlled control device can control the alarm device to emit an alarm sound.

Compared with the prior art, the quenching method of the metal processing parts of the present invention has the advantages of adding protective gas of methanol and toluene in proportion, so that the service life of the conveying mesh belt is extended from 1 month to 6 months to more than 20 months , the replacement frequency of the conveying mesh belt is therefore reduced, the production cost is lower, and the efficiency is higher. In addition, the present invention makes the process simpler and the operation safer through program control, and requires less equipment, and through program control The device realizes the automatic selection, detection and control of various parameters, with a high degree of automation, so that the quenching effect of the workpiece is better, the utilization rate of the equipment is also better, and the adaptability is stronger, and it can be used for quenching of various workpieces Processing, the quenching method also includes an automatic alarm step, which can automatically alarm in time when a problem occurs, making the production operation safer.

Detailed ways

Below in conjunction with embodiment the present invention is described in further detail.

The quenching method of the metal workpiece in this embodiment includes the following steps: 1. Open the quenching furnace through the program-controlled control device; The process parameters are automatically input to the program-controlled control device, and the program-controlled control device performs automatic control in the corresponding controller according to the process parameters; 3. After the protective gas is measured by the metering device, it is passed into the quenching furnace through the pipeline, and the protective gas is methanol The mixed gas formed after passing the toluene into the quenching furnace through their respective pipelines; 4. Place the workpiece to be quenched on the conveying mesh belt that can circulate in the quenching furnace; 5. Start the conveying mesh belt to perform quenching operation. The methanol and toluene are liquid methanol and liquid toluene, and the inflow ratio of the liquid methanol to liquid toluene is 4:1. The methanol flows into the quenching furnace through the methanol inflow pipe, and the methanol feed pipe is 4, and the inflow of each methanol feed pipe is 1.5 liters/hour. The toluene flows into the quenching furnace through the toluene inflow pipe, and the toluene feed pipe There are 3 pipes, and the inflow rate of each toluene inlet pipe is 0.5 liters/hour. The metering device is a flowmeter, and the flowmeters are respectively arranged on the methanol inflow pipe and the toluene inflow pipe, and the flowmeter is connected with the program control device through a line. The conveying mesh belt is placed on a rotatable idler roller. One part of the conveying mesh belt is located in the quenching furnace, and the other is located outside the quenching furnace. The temperature of the conveying mesh belt in the furnace is also 870-930°C, and the temperature of the conveying mesh belt outside the quenching furnace is controlled at 50-200°C. The cycle time of the conveying mesh belt is 120-180 minutes. The cycle time of the conveying mesh belt is 150 minutes, the time of the conveying mesh belt in the furnace chamber is 100 minutes, and the time of the conveying mesh belt outside the furnace chamber is 50 minutes. The mesh of the conveying mesh belt is rhombus, rectangle, circle or triangle, and the aperture of the mesh is smaller than the width of the workpiece when placed horizontally.

The program-controlled control device includes a monitoring device, and the monitoring device includes an environmental sensor capable of detecting various parameters corresponding to the workpiece code, a position sensor capable of monitoring the specific position of the workpiece in the quenching furnace, and a position sensor capable of detecting the quenching furnace, Methanol inflow pipe, toluene feed pipe, conveying mesh belt whether in the equipment sensor of running state, described environmental sensor, position sensor and equipment sensor are respectively connected with the control processor in the program-controlled control device by line, and described control processor and display is connected. The program-controlled control device is connected to the alarm device through a line, and when the environmental sensor detects abnormal parameters or the equipment sensor detects that the corresponding equipment stops working, the program-controlled control device can control the alarm device to issue an alarm sound.

Claims (5)

1. a kind of process for quenching of metal processing piece, it is characterised in that：Comprise the following steps：First, opened by program-controlled control device Open glowing furnace；2nd, by workpiece code be manually entered program-controlled control device or using code reader scanning process card bar code and incite somebody to action Workpiece technological parameter automatically enters program-controlled control device, and the program-controlled control device is according to technological parameter in corresponding controller In carry out automatically controlling；3rd, protection gas is passed through by pipeline in glowing furnace after metering device measures, the protection gas is first The gaseous mixture that alcohol is formed after respective pipeline is passed through glowing furnace respectively with toluene；4th, workpiece to be quenched is positioned over and quenched In stove on the foraminous conveyer of energy shuttling movement；5th, start foraminous conveyer, carry out hardening step；The methanol is liquid with toluene The inflow ratio of body methanol and liquid toluene, the liquid methanol and liquid toluene is 4：1；The methanol is flowed by methanol and managed Glowing furnace is flowed into, the methanol access tube is 4, and the influx of every methanol access tube is 1.5 ls/h, and the toluene leads to Cross toluene and flow into pipe and flow into glowing furnace, the toluene access tube is 3, the influx of every toluene access tube for 0.5 liter/it is small When；The foraminous conveyer is placed on the carrying roller that can be rotated, and the foraminous conveyer part is located in glowing furnace, and another part is located at Outside glowing furnace, the cavity temperature control in glowing furnace is 870~930 DEG C, and the foraminous conveyer temperature in glowing furnace is also 870 ~930 DEG C, the temperature control that the foraminous conveyer is located at glowing furnace external position is 50~200 DEG C；The cycling of the foraminous conveyer Week age is 150 minutes, and time of the foraminous conveyer in furnace chamber is 100 minutes, and the foraminous conveyer is outside furnace chamber Time is 50 minutes.

2. process for quenching according to claim 1, it is characterised in that：The metering device be flowmeter, the flowmeter It is separately positioned on methanol to flow on pipe and toluene inflow pipe, the flowmeter is connected by circuit with program-controlled control device.

3. process for quenching according to claim 2, it is characterised in that：The mesh of the foraminous conveyer is diamond shape, rectangle, circle Shape or triangle, the aperture of the mesh be less than workpiece it is horizontal positioned when width.

4. according to any process for quenching in claims 1 to 3, it is characterised in that：The program-controlled control device includes Monitoring device, the monitoring device, which includes, can detect the environmental sensor of corresponding parameters in workpiece code, can supervise Survey workpiece in glowing furnace the position sensor of specific location and glowing furnace can be detected, methanol flows into pipe, toluene access tube, defeated Send whether guipure is in the device sensor of operating status, the environmental sensor, position sensor and device sensor difference It is connected by circuit with the control processor in program-controlled control device, the control processor is connected with display.

5. process for quenching according to claim 4, it is characterised in that：The program-controlled control device is filled by circuit and alarm It puts and is connected, it is described when environmental sensor detects abnormal parameters or device sensor detects that relevant device is stopped Program-controlled control device can control warning device to sound the alarm.