阅读说明：本技术 一种纺织刀的加工工艺及其方法 (Processing technology and method of textile knife ) 是由 杨德好 于 2020-12-26 设计创作，主要内容包括：本发明提供一种纺织刀的加工工艺及其方法,包括模型建立→刀片雏形冲压→淬火→磨切削→开刃→热处理→冷却→再加热处理；其中淬火工艺中将得到的初坯刀片放置盐浴炉中加热至860～890℃淬火,并采用50～55％NaCl+50～45％Na-2CO-3溶液作为盐浴介质,采用亚铁氰化钠[Na-4Fe(CN)-6]或硬木炭脱氧,保温3-6h之后油冷至室温。采用上述中温盐浴炉中加热淬火再低温回火的方式制造纺织刀片,纺织刀片表面光洁,无麻点,无软点,硬度可达到750HV。经多年的生产实践考验,在新配制的中温盐浴炉中加热淬火,纺织刀片质量稳定。(The invention provides a processing technology of a textile knife and a method thereof, which comprises the steps of model establishment → stamping of a blade prototype → quenching → grinding and cutting → edging → heat treatment → cooling → heat treatment; wherein the obtained primary blank blade is placed in a salt bath furnace to be heated to 860-890 ℃ for quenching in the quenching process, and 50-55% NaCl and 50-45% Na are adopted 2 CO 3 The solution is used as salt bath medium and sodium ferrocyanide [ Na ] is adopted 4 Fe(CN) 6 ]Or deoxidizing with hard charcoal, keeping the temperature for 3-6h, and cooling the oil to room temperature. The method of heating quenching and low-temperature tempering in the medium-temperature salt bath furnace is adopted to manufacture the textile blade and textileThe blade has smooth surface, no pockmark and soft spot, and the hardness can reach 750 HV. Through years of production practice tests, the textile blade is heated and quenched in a newly prepared medium-temperature salt bath furnace, and the quality of the textile blade is stable.)

1. A processing technology of a textile knife and a method thereof are characterized by comprising the following steps:

(1) establishing a model by using SIMULINK software, and determining that the primary track of the blade consists of a straight line and a circular arc;

(2) stamping the Cr12 cold-rolled steel by using a stamping die, and forging a blade body with the thickness of 0.45mm to form a blade prototype;

(3) placing the primary blank blade obtained in the step (2) in a salt bath furnace, heating to 860-890 ℃ for quenching, and adopting 50-55% NaCl and 50-45% Na₂CO₃The solution is used as salt bath medium and sodium ferrocyanide [ Na ] is adopted₄Fe(CN)₆]Or deoxidizing hard charcoal, and cooling oil to room temperature after heat preservation for 3-6 h;

(4) reheating the quenched blade to 220-260 ℃ for tempering, preserving heat for 2-5 hours, and cooling in air to room temperature;

(5) carrying out a grinding and cutting process on the blade prototype by using a grinding machine, finely grinding two end surfaces and the outline of the blade, controlling the speed of a fine grinding main shaft to be 0.249-0.320 m/s, controlling the speed of a grinding wheel to be 38-44 m/s, and controlling the feed amount to be 0.010 mm/r;

(6) edging, namely edging on an edging machine to obtain a primary product;

(7) boiling the primary product in the step (6) in hot engine oil at the temperature of 800 ℃ for three hours; boiling for three hours, taking out the primary product, putting the primary product into quartz sand, and cooling to normal temperature;

(8) and finally, carrying out light wave heating on the surface of the blade for 200-400 ℃, and then cooling to eliminate thermal stress.

2. The processing technology of the textile knife and the method thereof according to the claim 1, characterized in that the emulsion is used as the cutting fluid during the grinding and cutting in the step (5), and the grinding machine is a precision grinding machine.

3. The processing technology of textile knife and the method thereof according to claim 1, wherein the thickness of the blade is 0.45mm, and the width of the blade is 8-38 mm.

Technical Field

The invention belongs to the technical field of textile blade preparation, and particularly relates to a processing technology and a method of a textile blade.

Background

The existing textile blades are mostly made of stainless steel. However, the traditional textile blade processing technology is very simple, and the hardness of the textile blade is not uniform enough and the quality is unstable due to the adoption of the simple heat treatment method of quenching and low-temperature tempering. The traditional spinning knife is simple in structure, can only be used for cutting, and cannot play a role in auxiliary support.

Disclosure of Invention

Aiming at the problems in the prior art, the invention aims to provide a processing technology of a textile knife and a method thereof.

In order to achieve the purpose, the invention provides the following technical scheme:

a processing technology of a textile knife and a method thereof comprise the following steps:

(1) establishing a model by using SIMULINK software, and determining that the primary track of the blade consists of a straight line and a circular arc;

(2) stamping the Cr12 cold-rolled steel by using a stamping die, and forging a blade body with the thickness of 0.45mm to form a blade prototype;

(3) placing the primary blank blade obtained in the step (2) in a salt bath furnace, heating to 860-890 ℃ for quenching, and adopting 50-55% NaCl and 50-45% Na₂CO₃The solution is used as salt bath medium and sodium ferrocyanide [ Na ] is adopted₄Fe(CN)₆]Or deoxidizing hard charcoal, and cooling oil to room temperature after heat preservation for 3-6 h;

(4) reheating the quenched blade to 220-260 ℃ for tempering, preserving heat for 2-5 hours, and cooling in air to room temperature;

(5) carrying out a grinding and cutting process on the blade prototype by using a grinding machine, finely grinding two end surfaces and the outline of the blade, controlling the speed of a fine grinding main shaft to be 0.249-0.320 m/s, controlling the speed of a grinding wheel to be 38-44 m/s, and controlling the feed amount to be 0.010 mm/r;

(6) edging, namely edging on an edging machine to obtain a primary product;

(7) boiling the primary product in the step (6) in hot engine oil at the temperature of 800 ℃ for three hours; boiling for three hours, taking out the primary product, putting the primary product into quartz sand, and cooling to normal temperature;

(8) and finally, carrying out light wave heating on the surface of the blade for 200-400 ℃, and then cooling to eliminate thermal stress.

Further, the emulsion is used as a cutting fluid during grinding and cutting in the step (5), and the grinding machine is a precision grinding machine.

Further, the thickness of the blade is 0.45mm, and the width of the blade is 8-38 mm.

Compared with the prior art, the invention has the beneficial effects that: the Cr12 is selected as a blank material, so that the steel has the characteristics of low cost, high grade of high-quality steel, good metal strength, plasticity, toughness and the like; the hardness of the workpiece is 28HRC, so that the subsequent cutting processing is facilitated. The processing technology of the textile blade adopts a mode of heating quenching in a medium-temperature salt bath furnace and then low-temperature tempering to manufacture the textile blade, the surface of the textile blade is smooth and clean, no pockmark or soft spot exists, and the hardness can reach 750 HV. Through years of production practice tests, the textile blade is heated and quenched in a newly prepared medium-temperature salt bath furnace, and the quality of the textile blade is stable.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

The invention provides a processing technology of a textile knife and a method thereof, comprising the following steps:

(1) establishing a model by using SIMULINK software, and determining that the primary track of the blade consists of a straight line and a circular arc;

(2) stamping the Cr12 cold-rolled steel by using a stamping die, and forging a blade body with the thickness of 0.45mm to form a blade prototype;

(3) placing the primary blank blade obtained in the step (2) in a salt bath furnace, heating to 860 ℃ for quenching, and adopting 50% NaCl and 50% Na₂CO₃The solution is used as salt bath medium and sodium ferrocyanide [ Na ] is adopted₄Fe(CN)₆]Or deoxidizing by using hard charcoal, and cooling the oil to room temperature after keeping the temperature for 3 hours;

(4) reheating the quenched blade to 220 ℃ for tempering, and cooling the blade to room temperature in air after heat preservation for 2 hours;

(5) grinding and cutting the blade prototype by using a grinding machine, finely grinding two end surfaces and the outline of the blade, controlling the speed of a fine grinding main shaft to be 0.249m/s, controlling the speed of a grinding wheel to be 38m/s, and controlling the feed amount to be 0.010 mm/r;

(6) edging, namely edging on an edging machine to obtain a primary product;

(7) boiling the primary product in the step (6) in hot engine oil at the temperature of 800 ℃ for three hours; boiling for three hours, taking out the primary product, putting the primary product into quartz sand, and cooling to normal temperature;

(8) finally, the surface of the blade is heated by light wave for 200 ℃, and then cooled to eliminate thermal stress.

Example 2: the difference from example 1 is that: quenching at 870 ℃ in the step (3), preserving heat for 4 hours, and adopting 55% NaCl and 45% Na₂CO₃The solution is used as salt bath medium and sodium ferrocyanide [ Na ] is adopted₄Fe(CN)₆]Deoxidizing; in the step (5), the speed of the fine grinding main shaft is controlled to be 0.320m/s, the speed of the grinding wheel is controlled to be 40m/s, and in the step (8), the surface of the blade is subjected to light wave heating at 400 ℃.

Example 3: the difference from example 1 is that: in the step (3), 890 ℃ quenching is carried out, heat preservation is carried out for 6 hours, and 50 percent of NaCl and 45 percent of Na are adopted₂CO₃The solution is used as a salt bath medium and hard charcoal is adopted for deoxidation; in the step (5), the speed of the fine grinding main shaft is controlled to be 0.320m/s, the speed of the grinding wheel is controlled to be 40m/s, and in the step (8), the surface of the blade is heated by light waves at 300 ℃.

Comparative example 1

The invention provides a processing technology of a textile knife and a method thereof, comprising the following steps:

(1) establishing a model by using SIMULINK software, and determining that the primary track of the blade consists of a straight line and a circular arc;

(2) stamping the Cr12 cold-rolled steel by using a stamping die, and forging a blade body with the thickness of 0.45mm to form a blade prototype;

(3) quenching the primary blank obtained in the step (2) at the temperature of 830-850 ℃, and carrying out heat preservation for 1-2h and then carrying out oil cooling to the normal temperature;

(4) reheating the quenched blade to 220 ℃ for tempering, and cooling the blade to room temperature in air after heat preservation for 2 hours;

(5) grinding and cutting the blade prototype by using a grinding machine, finely grinding two end surfaces and the outline of the blade, controlling the speed of a fine grinding main shaft to be 0.249m/s, controlling the speed of a grinding wheel to be 38m/s, and controlling the feed amount to be 0.010 mm/r;

(6) edging, namely edging on an edging machine to obtain a primary product;

(7) boiling the primary product in the step (6) in hot engine oil at the temperature of 800 ℃ for three hours; boiling for three hours, taking out the primary product, putting the primary product into quartz sand, and cooling to normal temperature;

(8) finally, the surface of the blade is heated by light wave for 200 ℃, and then cooled to eliminate thermal stress.

The textile blades prepared according to the examples of the present invention and the comparative examples were subjected to test measurements, and the specific values are shown in table 1 below.

Table 1 shows the results of parametric analysis of the blades of the examples and comparative examples:

item	Width (mm)	Thickness (mm)	Hardness (HV)
				Example 1	10	0.45	755
Example 2	10	0.45	753
				Example 3	12	0.45	748
Comparative example 1	10	0.45	680

The hardness of the textile blade manufactured by the method of heating, quenching and low-temperature tempering in a medium-temperature salt bath furnace is up to 750HV through testing under the condition of the same width and thickness, and the quality of the textile blade is stable.

The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the present invention as defined in the accompanying claims.