Long-life super-smooth scissors special for hairdressing and preparation method and application thereof

Abstract

The invention belongs to the technical field of scissors, and particularly relates to a pair of long-life super-smooth scissors special for hairdressing and a preparation method and application thereof. According to the long-service-life super-smooth scissors special for hairdressing, the hard coatings are arranged on the inner blade faces and the outer blade faces of the pair of scissors blades, and the hardness of the hard coatings is higher than that of a scissors blank of the scissors special for hairdressing; the service life of the scissors special for hairdressing can be prolonged by more than two times through the hard coating, meanwhile, the service life of the scissors special for hairdressing can be prolonged by more than ten times under the clamping of the self-sharpening effect, meanwhile, the shearing resistance and friction coefficient of the scissors special for hairdressing are low, and the scissors special for hairdressing feel smooth when used. Therefore, the technical problem that special hairdressing scissors with long service life and low resistance are lacked in the prior art is solved.

Description

Technical Field

[0001] The present application belongs to the technical field of scissors, and in particular relates to a pair of long-life, ultra-smooth hairdressing scissors, and a preparation method and application thereof. Background Art

[0002] Hairdressing scissors are one of the important tools used in the beauty and hairdressing industry. The user experience and sharpness retention life of the scissors are directly related to the satisfaction of hairdressers and users. Among hairdressing scissors, except for a few special hairdressing scissors such as tooth scissors, which have serrated edges, all other hairdressing scissors have arc-shaped blades that are approximately straight and connected by a hinge structure. The blade surfaces of the two blades are in direct contact with the human head and hair, and hair cutting is completed by the shear formed by the intersection of the two blade lines. The arc-shaped cutting surface of hairdressing scissors can fit the human head and hair more smoothly.

[0003] Although the curved cutting surface of the hairdressing scissors is helpful for the hairdresser to complete the hair cutting operation, the curved cutting surface of the hairdressing scissors has no reference plane. Therefore, it is difficult to re-grind the original cutting edge angle after the hairdressing scissors become blunt. This makes it an important requirement for the hairdressing scissors to be re-grinded as little as possible or not at all, which requires that the hairdressing scissors are not easy to become blunt and maintain their sharpness for a longer life. In addition, when the shearing resistance of the hairdressing scissors becomes larger, the hairdresser's haircutting process becomes strenuous, which may cause the hairdressing scissors to get stuck on the hair and fail to cut many hairs, causing the hair of the hairdresser to be torn or the cut to be uneven. Therefore, hairdressing scissors with both long life and low resistance have always been the goal pursued by the market and professional manufacturers. Summary of the invention

[0004] In view of this, the present application provides a long-life, ultra-smooth hairdressing scissors and a preparation method and application thereof, which are used to solve the technical problem in the prior art of lacking hairdressing scissors with both long life and low resistance.

[0005] In a first aspect, the present application provides a pair of long-life, ultra-smooth hairdressing scissors, comprising a hairdressing scissors blank and a hard coating;

[0006] The pair of shearing blades of the hairdressing scissors blank are connected by a hinge structure, and the cutting edge lines of the pair of shearing blades intersect during the closing process;

[0007] The inner and outer blade surfaces of a pair of cutting blades of the hairdressing scissors blank are provided with the hard coating, and the hardness of the hard coating is higher than the hardness of the hairdressing scissors blank.

[0008] Preferably, the blade surfaces of the pair of shears are bent toward the outer blade surface to form an outer convex and inner concave arc shape.

[0009] Preferably, the hairdressing scissors blank is made of martensitic stainless steel, and the hard coating is composed of a bonding layer, a transition layer and a functional layer from the inside to the outside;

[0010] The bonding layer is at least one of a transition metal and a transition metal nitride, or an alloy of a transition metal and a IIIA or IVA group element, or a nitride of the alloy;

[0011] The transition layer and the functional layer are at least one of transition metal element nitrides, transition metal element carbonitrides and transition metal element borides, or at least one of ternary or more multi-element nitrides or carbonitrides composed of transition metal elements and IIIA or IVA group elements;

[0012] The transition metal element is at least one of Group IVB, Group VB and Group VIB elements.

[0013] Preferably, the martensitic stainless steel is a martensitic stainless steel that has been sequentially quenched and tempered;

[0014] The hard coating comprises, from the inside to the outside, a titanium aluminum nitride bonding layer, a titanium silicon nitride transition layer and a titanium diboride functional layer.

[0015] Preferably, the surface of the hard coating is coated with at least one of a friction lubrication coating, a hydrophobic coating or a strong corrosion resistance coating.

[0016] The second aspect of the present application provides a method for preparing long-life super-smooth hairdressing scissors, which can prepare the long-life super-smooth hairdressing scissors described in the first aspect, and the preparation method comprises the following steps:

[0017] Step S1, subjecting a base of the hairdressing scissors to mechanical processing, heat treatment, grinding and lapping in sequence to obtain a hairdressing scissors blank;

[0018] Step S2, demagnetizing and cleaning the surface dirt of the hairdressing scissors blank in turn to obtain the hairdressing scissors blank to be plated;

[0019] Step S3, placing the hairdressing scissors blank to be plated in an arc ion plating machine for furnace cleaning to obtain the hairdressing scissors blank with activated and cleaned surface;

[0020] Step S4, using the bonding layer metal cathode target, the transition layer metal cathode target, and the functional layer metal cathode target in sequence to perform arc ion plating on the surface pretreated hairdressing scissors blank, and applying a hard coating on both blade surfaces of a pair of shears of the hairdressing scissors blank to obtain long-life ultra-smooth hairdressing scissors.

[0021] Preferably, in step S1, the quenching and heat preservation temperature during the heat treatment is a certain temperature between 1050 and 1180° C., and the cooling method is isothermal quenching;

[0022] The tempering temperature during the heat treatment is a certain temperature between 180 and 580°C.

[0023] Preferably, in step S2, the demagnetization is performed using a demagnetization machine;

[0024] The cleaning is performed by using ultrasonic cleaning and pure water rinsing.

[0025] Preferably, in step S3, the furnace cleaning includes thermal cleaning, hydrogen reduction and ion etching cleaning.

[0026] Preferably, in step S4, during the arc ion plating process, the working current range of the arc discharge is a specific value between 40 and 250 A, the negative bias voltage range is a specific value between 20 and 250 V or changes linearly within a certain range, the working gas pressure is a specific value between 0.5 and 5 Pa, the working time is a specific duration between 3 and 200 minutes, and the working atmosphere is a nitrogen atmosphere, an argon atmosphere, a hydrogen-containing reducing atmosphere, or a mixed atmosphere thereof.

[0027] The third aspect of the present application provides an application of the method for preparing a pair of long-life, ultra-smooth hairdressing scissors according to the second aspect in preparing dental scissors; the application comprises the following steps:

[0028] Step S1, machining, heat treating, grinding and lapping the tooth scissors base in sequence to obtain a tooth scissors blank;

[0029] Step S2, demagnetizing and cleaning the surface dirt of the tooth scissors blank in sequence to obtain the tooth scissors blank to be plated;

[0030] Step S3, placing the to-be-plated tooth scissors blank in an arc ion plating machine for furnace cleaning to obtain a tooth scissors blank with a clean surface activated;

[0031] Step S4, use the bonding layer metal cathode target, the transition layer metal cathode target, and the functional layer metal cathode target in sequence to perform arc ion plating on the surface pretreated scissors blank, apply a hard coating on the blade surface of a pair of shears of the scissors, and obtain long-life ultra-smooth scissors.

[0032] Compared with the hairdressing scissors in the prior art, the long-life and super-smooth hairdressing scissors provided by the present application have at least the following beneficial effects:

[0033] 1. The long-life, ultra-smooth hairdressing scissors provided by the present application are coated with the hard coating on both edge surfaces of a pair of cutting blades; the hard coating can increase the service life of the hairdressing scissors by more than double, and at the same time, with the help of the self-sharpening effect, the service life of the hairdressing scissors can be increased by more than 10 times.

[0034] 2. The shear resistance and friction coefficient of the long-life, super-smooth hairdressing scissors provided by the present application are lower than those of the hairdressing scissors that are not coated with arc ion plating. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0036] Figure 1 A schematic diagram of a long-life, ultra-smooth hairdressing scissors coated with a hard coating provided in this application;

[0037] Figure 2 A schematic diagram of the shear resistance test results of a pair of long-life, ultra-smooth hairdressing scissors provided in this application;

[0038] Figure 3 A schematic diagram of a shear life testing machine used in testing the shear resistance of a pair of long-life, ultra-smooth hairdressing scissors provided in the present application. DETAILED DESCRIPTION

[0039] The present application provides a pair of long-life, ultra-smooth hairdressing scissors and a preparation method and application thereof, which are used to solve the technical problem in the prior art of lacking hairdressing scissors with both long life and low resistance.

[0040] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0041] In view of the importance of low shearing resistance and long service life of hairdressing scissors, and the current lack of hairdressing scissors with both long service life and low resistance, the present application provides a long-life super-smooth hairdressing scissors; the composition structure of the long-life super-smooth hairdressing scissors provided by the present application includes a hairdressing scissors blank and a hard coating; the hairdressing scissors blank includes a pair of shearing blades, the pair of shearing blades are connected by a hinge structure, so that the pair of shearing blades can be opened and closed, and the two edge lines intersect during the closing process of the pair of shearing blades, and the shearing blades formed by the intersection of the two edge lines are The hair cutting operation is completed; and the hard coating is applied to the two blades of a pair of shears, the blades are located on the inside and outside of the shears, and can be specifically divided into the inner blade and the outer blade. Since the hardness of the hard coating is higher than the hardness of the hairdressing scissors blank, it strengthens the blade of the shear, so that the blade formed by the intersection of the blades is not easy to wear when cutting hair, and the sharpness is maintained, and the shearing life is more than doubled; after the shearing action of the intersection of the two blades completes hundreds of thousands of hair cutting operations, the wear of the intersection of the two blades will cause the hard coating at this position to be worn off, exposing the base. Under the guarantee of the coating process, the hardness of the bonding layer, transition layer, and functional layer of the shear gradually increases from the base to the outside, and the shearing wear gradually decreases from the inside to the outside, the blade line remains intact, and the blade angle is small. The new blade angle of the shear remains unchanged for a long time, resulting in a self-sharpening characteristic. The service life of the scissors is greatly improved, and the shearing resistance is also reduced, making the scissors feel silky, which makes the long-life super-smooth hairdressing scissors provided by the present application have both long life and low resistance.

[0042] Preferably, in the long-life, ultra-smooth hairdressing scissors provided in the present application, the blade surface of a pair of cutting blades when closed is convex toward the outer blade surface to form an outer convex and inner concave arc structure, so that the blade angle can be made smaller than that of other scissors, and the blade sharpness is higher, which is conducive to cutting flexible fibrous hair.

[0043] Preferably, in the long-life super-smooth hairdressing scissors provided in the present application, the ends of the shearing blanks of the hairdressing scissors are also provided with finger rings and shearing tails, which are used to improve the grip, comfort and directionality during the haircutting process.

[0044] Preferably, in the long-life and super-smooth hairdressing scissors provided in the present application, the hairdressing scissors blank is made of martensitic stainless steel, and the hard coating is composed of a bonding layer, a transition layer and a functional layer from the inside to the outside; wherein, the martensitic stainless steel is subjected to isothermal quenching and tempering treatment, and the hardness of the scissors base is a certain value between 52 and 65HRC (52 to 65HRC is approximately 550 to 840HV), and the hard coating is specifically composed of a titanium aluminum nitride bonding layer, a titanium silicon nitride transition layer and a titanium diboride functional layer from the inside to the outside, and the hardness HV of the titanium diboride coating is approximately greater than 4000 HV, and the coatings with gradually increasing hardness are ground off the hard coating on the inner blade surface to expose the base, and the new scissors can still remain sharp.

[0045] Preferably, for the long-life super-smooth hairdressing scissors provided by the present application, at least one of a friction lubricating coating, a hydrophobic coating or a strong corrosion-resistant coating can be further coated on the surface of the hard coating; the friction lubricating coating, the hydrophobic coating or the strong corrosion-resistant coating exerts corresponding lubricity, hydrophobicity and corrosion resistance, and after the friction lubricating coating, the hydrophobic coating or the strong corrosion-resistant coating and the hard coating on the inner blade surface of the shearing blade are worn off, the long-life super-smooth hairdressing scissors provided by the present application exerts the corresponding self-sharpening effect.

[0046] Correspondingly, the present application also provides a method for preparing long-life ultra-smooth hairdressing scissors, the preparation method uses arc ion plating to apply a hard coating on the blade surface of the hairdressing scissors blank; before arc ion plating, the martensitic stainless steel plate needs to be stamped, heat treated and machined, the heat treatment is to quench and temper in sequence to obtain a shear blank that meets the hardness and strength requirements, and the machining is finely processed through each pass to accurately control the grinding arc radius of the inner and outer blade surfaces to make a qualified hairdressing scissors blank, and then use a demagnetizer to demagnetize the residual magnetism, and then ultrasonic cleaning and pure water rinsing and drying are performed; after entering the furnace, chemical cleaning of ion etching and thermal cleaning is also required. Chemical cleaning is a combined cleaning method using thermal cleaning, hydrogen reduction and ion etching cleaning.

[0047] The process provided in the present application for applying a hard coating on both edge surfaces of a shear blank using arc ion plating can be applied not only to hairdressing scissors with shearing blades having two arc-shaped outer edge surfaces, but also to the shearing blades of toothed shears with two serrated shearing blades.

[0048] The long-life, ultra-smooth hairdressing scissors provided by the present application will be specifically described below in combination with embodiments and experimental examples.

[0049] Example 1

[0050] Embodiment 1 of the present application provides a pair of long-life, ultra-smooth hairdressing scissors, comprising the steps of processing the shear blanks, cleaning the shear blanks to remove dirt, and arc ion plating.

[0051] The steps of processing the shear blank include: firstly stamping the martensitic stainless steel plate into the shear blank, then isothermally quenching the shear blank at a certain temperature between 1050 and 1180°C, and then tempering the shear blank at a certain temperature between 180 and 580°C for more than 4 hours, so as to achieve the requirements that the hardness of the scissors base is a certain value between 52 and 65HRC and the strength is greater than 1500MPa; and then through fine processing of each pass, the arc radius of the inner and outer grinding of the shear blank is accurately controlled to produce a qualified hairdressing special scissors blank.

[0052] The steps of cleaning and removing dirt from the shear blanks include: first, the shear blanks for hairdressing scissors are placed on a demagnetizing machine to remove residual magnetism caused by mechanical processing, and then placed in an automatic cleaning line for multiple ultrasonic cleaning and pure water rinsing to remove wax and various dirt physically adsorbed on the surface of the shear blanks, and then the acid-base balance treatment is completed. After cleaning, the shear blanks should be slowly pulled out of the water, and then blown dry and dried with compressed air.

[0053] The steps of arc ion plating include:

[0054] Hang the cleaned and dried cut blanks on the coating special rotating rack, load them into the coating machine and evacuate to 5×10 - 3 Pa, and heat the coating machine furnace to a certain working temperature between 180 and 550°C;

[0055] First, the sheared blank is cleaned in the furnace; a mixed gas of argon and hydrogen is introduced into the furnace, the working pressure in the furnace is controlled to be a certain value between 0.5 and 5 Pa, the amount of hydrogen introduced is controlled to change in a certain range between 50% and 0% of the total working pressure according to a linear control mode, the bias power supply is turned on, the cleaning bias is selected to be in a certain range between 20 and 450 V or a certain value, the special arc target for ion cleaning is turned on, the target arc current is controlled to be a specific value between 40 and 150 A, and ion etching cleaning is performed for a specific time length between 50 and 120 minutes according to a pre-set cleaning program.

[0056] After the shear blank is cleaned in the furnace, the working gas is replaced with pure nitrogen, and the working gas pressure is adjusted to a certain value between 0.5 and 5 Pa, the negative bias voltage is adjusted to a specific value between 20 and 250 V, the target magnetic field electromagnetic control and permanent magnet control parameters of a row of Ti-Al targets are adjusted, the target current is adjusted to a specific value between 50 and 150 A, the Ti-Al target is turned on for coating for a specific time value between 3 and 30 minutes, and the bonding layer coating of the shear blank is completed, and the bonding layer is a titanium aluminum nitride bonding layer.

[0057] After the bonding layer coating is completed, the working gas is maintained as pure nitrogen, and the working gas pressure is adjusted to a specific value between 0.5 and 5 Pa, the negative bias voltage is adjusted to a specific value between 20 and 250 V or a linear change within a range, the target magnetic field electromagnetic control and permanent magnet control parameters of a row of Ti-Si targets are adjusted, the target working current is controlled to a specific value between 50 and 150 A, and the row of Ti-Si targets is turned on to coat the transition layer on the shear for a specific time between 30 and 200 minutes, and the transition layer is a titanium silicon nitride transition layer.

[0058] After the transition layer is plated, the working gas is evacuated and replaced with pure argon gas, and the working gas pressure is adjusted to a specific value between 0.5 and 5 Pa, the negative bias voltage is adjusted to a specific value between 20 and 250 V or a linear change within a range, the target magnetic field electromagnetic control and permanent magnet control parameters of a row of Ti-B alloy targets are adjusted, the target working current is controlled to a specific value between 50 and 250 A, and the row of Ti-B targets is turned on to plate the functional layer of the shears for a specific time of 30 to 200 minutes, and the functional layer is a titanium diboride coating; thus, hard coatings of a bonding layer, a transition layer and a functional layer are formed on the two edge surfaces of the shears from the inside to the outside, and a long-life ultra-smooth hairdressing special scissors are obtained, as shown in the schematic diagram. Figure 1 shown.

[0059] Comparative Example 1

[0060] Comparative Example 1 of the present application provides a pair of scissors specially used for hairdressing, comprising the steps of processing a shear blank and cleaning and removing dirt from the shear blank.

[0061] The steps of processing the shear blank include: firstly stamping the martensitic stainless steel plate into the shear blank, then isothermally quenching the shear blank at a certain temperature between 1050 and 1180°C, and then tempering the shear blank at a certain temperature between 180 and 580°C for more than 4 hours, so as to achieve the requirements that the hardness of the scissors base is a certain value between 52 and 65HRC and the strength is greater than 1500MPa; and then through fine processing of each pass, the arc radius of the inner and outer grinding of the shear blank is accurately controlled to produce a qualified hairdressing special scissors blank.

[0062] The steps of cleaning and removing dirt from the scissors blank include: firstly removing the residual magnetism caused by mechanical processing from the scissors blank for hairdressing on a demagnetizing machine, and then putting it into an automatic cleaning line for multiple ultrasonic cleaning and pure water rinsing to remove wax and various dirt physically adsorbed on the surface of the scissors blank, and then completing its acid-base balance treatment. After cleaning, the scissors blank should be slowly pulled out of water, and then blown dry and dried with compressed air to obtain the scissors for hairdressing.

[0063] Experimental Example 1

[0064] Experimental Example 1 of the present application performs a performance test on the long-life, super-smooth hairdressing scissors provided in Example 1 and the hairdressing scissors provided in Comparative Example 1.

[0065] The performance test is carried out on a shear life test machine. The schematic diagram of the shear life test machine is as follows: Figure 3 As shown in the figure, the performance test process is to turn on the monitor, reset the counter value to zero, attach the resistor-strain gauge to the sensor mechanism of the shear life tester, connect the stress test industrial computer, record and monitor the real-time change of shear force during the hairdressing scissors life test and count. When the test roll cloth begins to be cut, the counting stops, and the total number of times the test cloth is cut is the shearing life of the long-life super-smooth hairdressing scissors or hairdressing scissors.

[0066] The results of the performance test are as follows Figure 2 Or as shown in Table 1, Table 1 is Figure 2 The multiple statistical averages of the resistance values ​​at the corresponding specific shear blade positions; from Table 1 and Figure 2 It can be seen that the shear resistance of the hairdressing scissors provided in Comparative Example 1 without arc ion plating is between 4.54 and 6.68 N, while the shear resistance of the long-life ultra-smooth hairdressing scissors with arc ion plating provided in Example 1 is between 0.27 and 2.63 N; at the same time, the friction coefficient of the stainless steel-stainless steel of the two cutting blades of the hairdressing scissors without arc ion plating is 0.67 according to the data, while the friction coefficient of the long-life ultra-smooth hairdressing scissors with arc ion plating is 0.27 and 2.63 N respectively. 2 Two shear TiB after hard coating 2 -TiB 2 The friction coefficient and the shear edge friction when the two shears TiB are exposed to the base 2 -The friction coefficient of stainless steel is no more than 0.45. Therefore, the coated hairdressing scissors feel smooth and have little resistance.

[0067] At the same time, by querying the monitoring records of the shear life tester, it can be observed that the long-life ultra-smooth hairdressing scissors provided in Example 1 using arc ion plating have a film layer integrity maintained between 600,000 and 800,000 times, and a martensitic stainless steel substrate appears on the inner blade surface of the arc-shaped shear blade after friction, and a self-sharpening effect begins to appear. When the test is continued, the scissors can cut the test roll of cloth for more than 2 million times and can still continue to cut the test cloth.

[0068] Table 1: Performance test results of long-life super-smooth hairdressing scissors or hairdressing scissors

[0069] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A pair of long-life, super-smooth hairdressing scissors, characterized in that: Including hairdressing scissors blanks and hard coating; The pair of shearing blades of the hairdressing scissors blank are connected by a hinge structure, and the cutting edge lines of the pair of shearing blades intersect during the closing process; The inner and outer blade surfaces of a pair of cutting blades of the hairdressing scissors blank are provided with the hard coating, and the hardness of the hard coating is higher than the hardness of the hairdressing scissors blank.

2. The long-life super-smooth hairdressing scissors according to claim 1, characterized in that: The blade surfaces of the pair of shears are both bent toward the outer blade surface to form an outer convex and inner concave arc.

3. The long-life super-smooth hairdressing scissors according to claim 1, characterized in that: The hairdressing scissors blank is made of martensitic stainless steel, and the hard coating is composed of a bonding layer, a transition layer and a functional layer from the inside to the outside; The bonding layer is at least one of a transition metal and a transition metal nitride, or an alloy of a transition metal and a IIIA or IVA group element, or a nitride of the alloy; The transition layer and the functional layer are at least one of transition metal element nitrides, transition metal element carbonitrides and transition metal element borides, or at least one of ternary or more multi-element nitrides or carbonitrides composed of transition metal elements and IIIA or IVA group elements; The transition metal element is at least one of Group IVB, Group VB and Group VIB elements.

4. The long-life super-smooth hairdressing scissors according to claim 1, characterized in that: The surface of the hard coating is coated with at least one of a friction lubrication coating, a hydrophobic coating or a strong corrosion resistance coating.

5. A method for preparing long-life super-smooth hairdressing scissors, characterized in that: The following steps are involved: Step S1, subjecting a base of the hairdressing scissors to mechanical processing, heat treatment, grinding and lapping in sequence to obtain a hairdressing scissors blank; Step S2, demagnetizing and cleaning the surface dirt of the hairdressing scissors blank in turn to obtain the hairdressing scissors blank to be plated; Step S3, placing the hairdressing scissors blank to be plated in an arc ion plating machine for furnace cleaning to obtain the hairdressing scissors blank with activated and cleaned surface; Step S4, using the bonding layer metal cathode target, the transition layer metal cathode target, and the functional layer metal cathode target in sequence to perform arc ion plating on the surface pretreated hairdressing scissors blank, and applying a hard coating on both blade surfaces of a pair of shears of the hairdressing scissors blank to obtain long-life ultra-smooth hairdressing scissors.

6. The method for preparing a pair of long-life, super-smooth hairdressing scissors according to claim 5, characterized in that: In step S1, the quenching and heat preservation temperature during the heat treatment process is a certain temperature between 1050 and 1180° C., and the quenching method is isothermal quenching; The tempering temperature during the heat treatment process is a certain temperature between 180 and 580°C.

7. The method for preparing a pair of long-life, super-smooth hairdressing scissors according to claim 5, characterized in that: In step S2, the demagnetization is performed using a demagnetization machine; The method of cleaning the dirty surface is to use ultrasonic cleaning and pure water rinsing.

8. The method for preparing a pair of long-life, super-smooth hairdressing scissors according to claim 5, characterized in that: In step S3, the furnace cleaning includes thermal cleaning, hydrogen reduction and ion etching cleaning.

9. The method for preparing a pair of long-life, super-smooth hairdressing scissors according to claim 5, characterized in that: In step S4, during the arc ion plating process, the operating current range of the arc discharge is a specific value between 40 and 250A, the negative bias voltage range is a specific value between 20 and 250V or changes linearly within a certain range, the working gas pressure is a specific value between 0.5 and 5Pa, the working time is a specific duration between 3 and 200 minutes, and the working atmosphere is a nitrogen atmosphere, an argon atmosphere, a hydrogen-containing reducing atmosphere, or a mixture of these atmospheres.

10. Application of the method for preparing long-life super-smooth hairdressing scissors according to any one of claims 5 to 9 in preparing dental scissors; characterized in that: The application comprises the following steps: Step S1, machining, heat treating, grinding and lapping the tooth scissors base in sequence to obtain a tooth scissors blank; Step S2, demagnetizing and cleaning the surface dirt of the tooth scissors blank in sequence to obtain the tooth scissors blank to be plated; Step S3, placing the to-be-plated tooth scissors blank in an arc ion plating machine for furnace cleaning to obtain a tooth scissors blank with a clean surface activated; Step S4, sequentially using the bonding layer metal cathode target, the transition layer metal cathode target, the functional layer metal cathode target, The pole target performs arc ion plating on the surface pre-treated tooth scissor blank, and applies a hard coating on the blade surface of a pair of shear blades of the tooth scissors to obtain long-life ultra-smooth tooth scissors.

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