阅读说明：本技术 一种钝化陶瓷刀具的修复方法 (Method for repairing passivated ceramic cutter ) 是由 常东强 于 2019-11-20 设计创作，主要内容包括：本发明公开了一种钝化陶瓷刀具的修复方法,具体按照以下步骤实施：步骤1,对钝化的陶瓷刀具刀口进行强化处理；步骤2,对经步骤1处理的陶瓷刀具进行深冷处理。本发明的一种钝化陶瓷刀具的修复方法,对钝化的刀具进行修复,延长了刀具的使用寿命,节省了重新制作刀具的材料成本。(The invention discloses a method for repairing a passivated ceramic cutter, which is implemented according to the following steps: step 1, strengthening the passivated ceramic cutter edge; and 2, carrying out cryogenic treatment on the ceramic cutter treated in the step 1. According to the method for repairing the passivated ceramic cutter, the passivated cutter is repaired, the service life of the cutter is prolonged, and the material cost for remanufacturing the cutter is saved.)

1. A method for repairing a passivated ceramic tool is characterized by comprising the following steps:

step 1, strengthening the passivated ceramic cutter edge;

and 2, carrying out cryogenic treatment on the ceramic cutter treated in the step 1.

2. The method for repairing a passivated ceramic tool according to claim 1, wherein step 1 specifically comprises:

step 1.1, processing a knife edge of a ceramic cutter into a circular arc shape, wherein the included angle of the knife edge of the circular arc-shaped knife edge is 55-65 degrees;

step 1.2, performing half mirror polishing treatment on the front and rear tool faces of the ceramic tool processed in the step 1.1;

step 1.3, carrying out ultrasonic vibration cleaning on the polished ceramic cutter;

step 1.4, putting the cleaned ceramic cutter into a heat treatment furnace for temperature rise alternating magnetic treatment, wherein the specific method comprises the following steps: heating a vacuum heat treatment furnace to 200-300 ℃, applying a field intensity of 1.2-2T, a duty ratio of 30-60% and a frequency of 5-20 Hz, and starting heating at a heating rate of 20-30 ℃/min until reaching a high temperature of 700-800 ℃;

step 1.5, converting the alternating magnetic field into a constant magnetic field, continuously carrying out constant magnetic field heat preservation treatment on the ceramic cutter at a high-temperature section in a heat treatment furnace, raising the field strength to 2.5-3.0T, and preserving the heat for 2-4 hours;

and step 1.6, finishing heat preservation, and naturally cooling the ceramic cutter to room temperature.

3. The method for repairing a passivated ceramic tool according to claim 2, wherein step 1.2 specifically comprises: the surface of the ceramic cutter is mechanically polished by using a grinding wheel, the grinding wheel is a soft base grinding wheel, the soft base grinding wheel is arranged on a rotary grinding machine, and the surface roughness of the front surface and the rear surface of the ceramic cutter after polishing treatment is Ra0.05-Ra0.08.

4. The method for repairing a passivated ceramic tool according to claim 2, wherein step 1.3 specifically comprises: and (3) carrying out ultrasonic vibration cleaning on the polished ceramic cutter, wherein the ultrasonic power is 1.2 KHZ-1.5 KHZ, and cleaning for 20-25 min by using a semi-water-based cleaning agent.

5. The method for repairing a passivated ceramic tool according to claim 1, wherein the cryogenic treatment specifically comprises:

after the ceramic cutting tool treated in the step 1 is cleaned and wiped, putting the ceramic cutting tool into a subzero tank controlled by a program to carry out subzero treatment, wherein the subzero treatment process comprises the following steps: firstly, cooling from room temperature to-90 to-110 ℃, cooling at the speed of 1 to 1.5 ℃/min, and keeping the temperature for 1 to 1.5 hours; cooling to-120 ℃ to-180 ℃, the cooling speed is 2-3 ℃/min, preserving heat for 12-24h, closing a liquid nitrogen input valve after cryogenic treatment, and starting heating tempering: tempering temperature is 200-300 ℃, heating speed is 5-10 ℃/min, heat preservation is carried out for 5-10 h, and then natural cooling is carried out to room temperature.

Technical Field

The invention belongs to the technical field of articles for daily use, and relates to a method for repairing a passivated ceramic cutter.

Background

The ceramic cutter has the advantages of stable chemical property, high temperature resistance, high wear resistance and hardness, safe and nontoxic raw materials, difficult chemical reaction with air or food, no rustiness of the cutter, no damage to the delicate flavor of the food and the like; and is now increasingly accepted and enjoyed by the general public.

However, various micro defects (impurities, microcracks, holes and the like) inevitably introduced in the use process of the ceramic cutter can also cause the damage and failure of the cutter to different degrees, namely the passivation which is often said by us, the method adopted by the common household passivated ceramic cutter is a new substitution, the waste ceramic cutter is generated, and the effective recovery and repair of the passivated ceramic cutter are urgently needed at present.

Disclosure of Invention

The invention aims to provide a method for repairing a passivated ceramic cutter, which is used for repairing the passivated cutter, prolonging the service life of the cutter and saving the material cost for remanufacturing the cutter.

The technical scheme adopted by the invention is that the method for repairing the passivated ceramic cutter is implemented according to the following steps:

step 1, strengthening the passivated ceramic cutter edge;

and 2, carrying out cryogenic treatment on the ceramic cutter treated in the step 1.

The present invention is also characterized in that,

the step 1 specifically comprises the following steps:

step 1.1, processing a knife edge of a ceramic cutter into a circular arc shape, wherein the included angle of the knife edge of the circular arc-shaped knife edge is 55-65 degrees;

step 1.2, performing half mirror polishing treatment on the front and rear tool faces of the ceramic tool processed in the step 1.1;

step 1.3, carrying out ultrasonic vibration cleaning on the polished ceramic cutter;

step 1.4, putting the cleaned ceramic cutter into a heat treatment furnace for temperature rise alternating magnetic treatment, wherein the specific method comprises the following steps: heating a vacuum heat treatment furnace to 200-300 ℃, applying a field intensity of 1.2-2T, a duty ratio of 30-60% and a frequency of 5-20 Hz, and starting heating at a heating rate of 20-30 ℃/min until reaching a high temperature of 700-800 ℃;

step 1.5, converting the alternating magnetic field into a constant magnetic field, continuously carrying out constant magnetic field heat preservation treatment on the ceramic cutter at a high-temperature section in a heat treatment furnace, raising the field strength to 2.5-3.0T, and preserving the heat for 2-4 hours;

and step 1.6, finishing heat preservation, and naturally cooling the ceramic cutter to room temperature.

The step 1.2 is specifically as follows: the surface of the ceramic cutter is mechanically polished by using a grinding wheel, the grinding wheel is a soft base grinding wheel, the soft base grinding wheel is arranged on a rotary grinding machine, and the surface roughness of the front surface and the rear surface of the ceramic cutter after polishing treatment is Ra0.05-Ra0.08.

The step 1.3 is specifically as follows: and (3) carrying out ultrasonic vibration cleaning on the polished ceramic cutter, wherein the ultrasonic power is 1.2 KHZ-1.5 KHZ, and cleaning for 20-25 min by using a semi-water-based cleaning agent.

The subzero treatment specifically comprises the following steps:

cleaning and wiping the ceramic cutter treated in the step 1, and putting the ceramic cutter into a program-controlled subzero tank for subzero treatment, wherein the subzero treatment process comprises the following steps: firstly, cooling from room temperature to-90 to-110 ℃, cooling at the speed of 1 to 1.5 ℃/min, and keeping the temperature for 1 to 1.5 hours; cooling to-120 ℃ to-180 ℃, the cooling speed is 2-3 ℃/min, preserving heat for 12-24h, closing a liquid nitrogen input valve after cryogenic treatment, and starting heating tempering: tempering temperature is 200-300 ℃, heating speed is 5-10 ℃/min, heat preservation is carried out for 5-10 h, and then natural cooling is carried out to room temperature.

The invention has the beneficial effects that: according to the invention, the knife edge of the ceramic knife tool is processed into the arc shape, the included angle of the knife edge of the arc-shaped knife edge is 55-65 degrees, the existing knife edge shape is broken, and the knife edge adopts the arc shape, so that the knife edge stress is more uniform, the stress is dispersed, and the strength of the knife edge is increased, thereby effectively reducing the occurrence of knife edge cracking phenomenon and prolonging the service life of the ceramic knife tool; the surface of the ceramic cutter is mechanically polished by using the grinding wheel, so that the process is labor-saving and time-saving; and the repaired cutter by adopting the cryogenic treatment process has good toughness, difficult edge breakage and long service life.

Detailed Description

The present invention will be described in detail with reference to the following embodiments.

The invention relates to a method for repairing a passivated ceramic cutter, which is implemented according to the following steps:

step 1, strengthening the passivated ceramic cutter edge; the method specifically comprises the following steps: step 1.1, processing a knife edge of a ceramic cutter into a circular arc shape, wherein the included angle of the knife edge of the circular arc-shaped knife edge is 55-65 degrees;

step 1.2, performing half mirror polishing treatment on the front and rear tool faces of the ceramic tool processed in the step 1.1; the method specifically comprises the following steps: the surface of the ceramic cutter is mechanically polished by using a grinding wheel, the grinding wheel is a soft base grinding wheel, the soft base grinding wheel is arranged on a rotary grinding machine, and the surface roughness of the front surface and the rear surface of the ceramic cutter after polishing treatment is Ra0.05-Ra0.08;

step 1.3, performing ultrasonic vibration cleaning on the polished ceramic cutter, wherein the ultrasonic power is 1.2 KHZ-1.5 KHZ, and cleaning for 20-25 min by using a semi-water-based cleaning agent;

step 1.4, putting the cleaned ceramic cutter into a heat treatment furnace for temperature rise alternating magnetic treatment, wherein the specific method comprises the following steps: heating a vacuum heat treatment furnace to 200-300 ℃, applying a field intensity of 1.2-2T, a duty ratio of 30-60% and a frequency of 5-20 Hz, and starting heating at a heating rate of 20-30 ℃/min until reaching a high temperature of 700-800 ℃;

step 1.5, converting the alternating magnetic field into a constant magnetic field, continuously carrying out constant magnetic field heat preservation treatment on the ceramic cutter at a high-temperature section in a heat treatment furnace, raising the field strength to 2.5-3.0T, and preserving the heat for 2-4 hours;

and step 1.6, finishing heat preservation, and naturally cooling the ceramic cutter to room temperature.

Step 2, carrying out subzero treatment on the ceramic cutter treated in the step 1, which specifically comprises the following steps:

cleaning and wiping the ceramic cutter treated in the step 1, and putting the ceramic cutter into a program-controlled subzero tank for subzero treatment, wherein the subzero treatment process comprises the following steps: firstly, cooling from room temperature to-90 to-110 ℃, cooling at the speed of 1 to 1.5 ℃/min, and keeping the temperature for 1 to 1.5 hours; cooling to-120 ℃ to-180 ℃, the cooling speed is 2-3 ℃/min, preserving heat for 12-24h, closing a liquid nitrogen input valve after cryogenic treatment, and starting heating tempering: tempering temperature is 200-300 ℃, heating speed is 5-10 ℃/min, heat preservation is carried out for 5-10 h, and then natural cooling is carried out to room temperature.