阅读说明：本技术 一种豆浆机研磨刀的加工工艺 (Processing technology of grinding knife of soybean milk machine ) 是由 于超 于 2020-12-29 设计创作，主要内容包括：本发明涉及豆浆机领域,具体是一种豆浆机研磨刀的加工工艺,包括以下步骤：S1：选材；S2：退火；S3：热熔并注塑成型；S4：淬火；S5：冷处理；S6：回火；S7：磨削加工；S8：抛光,S1中选用钢材质为r12Mo1V1,H13K,LD,W18Cr4V,W6Mo5Cr4V2Co5中的一种材质,S2中其退火温度为640～780°C,退火时间为3.5～4h,保温1～2h后空冷至常温,S3中的刀片成型模具为高合金模具钢材质。本发明的有益效果：采用退火、淬火、冷处理和回火的工艺对刀片处理,降低整体内部的永久应力产生,从而使整体的强度增强,保证整体的使用寿命,使用该工艺制作出来的刀片具有良好的强度,适用于多种材料的切割,并且表面平整度较高,同时具有较长的使用寿命。(The invention relates to the field of soybean milk machines, in particular to a processing technology of a grinding knife of a soybean milk machine, which comprises the following steps: s1: selecting materials; s2: annealing; s3: carrying out hot melting and injection molding; s4: quenching; s5: performing cold treatment; s6: tempering; s7: grinding; s8: polishing, wherein the steel material selected in S1 is one of r12Mo1V1, H13K, LD, W18Cr4V and W6Mo5Cr4V2Co5, the annealing temperature in S2 is 640-780 ℃, the annealing time is 3.5-4H, the temperature is kept for 1-2H, then the steel material is cooled to the normal temperature by air, and the blade forming die in S3 is made of high alloy die steel. The invention has the beneficial effects that: the blade is processed by adopting the processes of annealing, quenching, cold treatment and tempering, the generation of permanent stress in the whole body is reduced, so that the strength of the whole body is enhanced, the service life of the whole body is ensured, the blade manufactured by using the process has good strength, is suitable for cutting various materials, has higher surface flatness and longer service life.)

1. A processing technology of a grinding knife of a soybean milk machine is characterized in that: the method comprises the following steps:

s1: selecting materials;

s2: annealing;

s3: carrying out hot melting and injection molding;

s4: quenching;

s5: performing cold treatment;

s6: tempering;

s7: grinding;

s8: and (6) polishing.

2. The processing technology of the grinding knife of the soymilk machine according to claim 1, characterized in that: the steel material selected in S1 is one of r12Mo1V1, H13K, LD, W18Cr4V and W6Mo5Cr4V2Co 5.

3. The processing technology of the grinding knife of the soymilk machine according to claim 1, characterized in that: in the S2, the annealing temperature is 640-780 ℃, the annealing time is 3.5-4 h, and the annealing is carried out after heat preservation for 1-2 h and then air cooling is carried out to the normal temperature.

4. The processing technology of the grinding knife of the soymilk machine according to claim 1, characterized in that: and the blade forming die in the S3 is made of high-alloy die steel, and the smelting furnace is a high-temperature tube type smelting furnace.

5. The processing technology of the grinding knife of the soymilk machine according to claim 1, characterized in that: s4, the workpiece is placed into a quenching furnace, heated to 550-600 ℃, insulated for 15-25 min, heated to 750-780 ℃, insulated for 20-30 min, cooled to 130-150 ℃, and taken out.

6. The processing technology of the grinding knife of the soymilk machine according to claim 1, characterized in that: and S5, cold treatment, namely placing the cutter blade in a liquid nitrogen cooling box for cold treatment at the temperature of below-185 ℃, and keeping the temperature for 24 hours.

7. The processing technology of the grinding knife of the soymilk machine according to claim 1, characterized in that: tempering in S6: and (3) placing the subzero-treated workpiece into a 90kw air circulation resistance belt furnace, heating to 490-550 ℃, preserving heat for 3 hours, discharging, and cooling to room temperature.

8. The processing technology of the grinding knife of the soymilk machine according to claim 1, characterized in that: in S7, the grinding process uses a circular table surface grinder to perform rough machining and grinding process on the blade.

9. The processing technology of the grinding knife of the soymilk machine according to claim 1, characterized in that: and S8, polishing the workpiece until the dimensional tolerance is-0.001 mm and the surface roughness is less than Ra0.07 mu m, and cleaning the surface to finish machining after the workpiece is qualified.

10. The processing technology of the grinding knife of the soymilk machine according to claim 1, characterized in that: and the polishing machine in the S8 is a numerical control disc polishing machine, and ensures that the surface roughness of the formed blade is less than Ra0.08 mu m.

Technical Field

The invention relates to the field of soybean milk machines, in particular to a processing technology of a grinding knife of a soybean milk machine.

Background

The soybean milk machine is mainly controlled by a microcomputer, realizes full automation of preheating, pulping, boiling and delayed boiling processes and the like, and particularly adds a processing procedure of 'slow fire boiling', so that the soybean milk is richer in nutrition and more fragrant and lustrous in taste. The soybean milk machine adopts a Laval net with large meshes and a bottomless net and is matched with an X-shaped strong cyclone blade, when the soybean milk is contracted and necked by the Laval net, the flow rate is suddenly enhanced and accelerated, five-cereal ingredients are sheared and collided at a high speed in a three-dimensional space and finely ground for tens of thousands of times, and nutrients such as various vegetable proteins, carbohydrates, dietary fibers, vitamins, trace elements and the like are fully blended into the soybean milk, so that the soybean milk has balanced and comprehensive nutrition, and the machine is easier to clean.

Chinese patent No. CN105058003B provides a processing technique of a full-flanging paper shredder blade, which comprises a metal material belt providing step, a blade blank forming step, a flanging forming step, a flattening step, a cutter point forming step and a cutting step, and a finished product of the full-flanging paper shredder blade is obtained.

The existing processing technology of the grinding knife of the soybean milk machine has the defects that the processed blade is low in reliability and easy to damage, and the blade is low in sharpness and hardness due to the fact that the temperature is not changeable, so that the processing technology of the grinding knife of the soybean milk machine needs to be researched and developed urgently.

Disclosure of Invention

The invention aims to provide a processing technology of a grinding knife of a soybean milk machine, which aims to solve the problems that the processed blade in the background technology is low in reliability and has no temperature variability.

The technical scheme of the invention is as follows: a processing technology of a grinding knife of a soybean milk machine comprises the following steps:

s1: selecting materials;

s2: annealing;

s3: carrying out hot melting and injection molding;

s4: quenching;

s5: performing cold treatment;

s6: tempering;

s7: grinding;

s8: and (6) polishing.

In addition, the steel material selected in S1 is one of r12Mo1V1, H13K, LD, W18Cr4V and W6Mo5Cr4V2Co 5.

Further, in S2, the annealing temperature is 640-780 ℃, the annealing time is 3.5-4 hours, and the annealing temperature is kept for 1-2 hours and then air-cooled to the normal temperature.

Further, the blade forming die in the step S3 is made of high alloy die steel, and the smelting furnace is a high-temperature tube type smelting furnace.

Further, in S4, the workpiece is placed into a quenching furnace, heated to 550-600 ℃, insulated for 15-25 min, heated to 750-780 ℃, insulated for 20-30 min, cooled to 130-150 ℃, and taken out.

Further, cold treatment is carried out in S5, the cutter blade is placed in a liquid nitrogen cooling box for cold treatment below-185 ℃, and heat preservation is carried out for 24 hours.

Further, tempering in S6: and (3) placing the subzero-treated workpiece into a 90kw air circulation resistance belt furnace, heating to 490-550 ℃, preserving heat for 3 hours, discharging, and cooling to room temperature.

Further, in S7, the grinding process uses a circular table surface grinder to perform rough machining and grinding process on the blade.

Further, polishing the workpiece in S8 until the dimensional tolerance is-0.001 mm and the surface roughness is less than Ra0.07 mu m, and cleaning the surface to finish machining after the workpiece is qualified.

Further, the polishing machine in S8 is a numerical control disc polishing machine, and ensures that the surface roughness of the formed blade is less than Ra0.08 μm.

The invention provides a processing technology of a grinding knife of a soybean milk machine by improving, compared with the prior art, the grinding knife of the soybean milk machine has the following improvements and advantages:

(1) the blade is processed by adopting the processes of annealing, quenching, cold treatment and tempering, the generation of permanent stress in the whole body is reduced, so that the strength of the whole body is enhanced, the service life of the whole body is ensured, the blade manufactured by using the process has good strength, is suitable for cutting various materials, has higher surface flatness and longer service life, and increases the practicability of the whole body.

(2) The mode of parameters in the heat treatment process is adopted, and reasonable heating temperature gradient and time parameters in the heat treatment process are designed, so that the blade has excellent hardness, sharpness and processability.

(3) The high-speed tool steel made of r12Mo1V1, H13K, LD, W18Cr4V and W6Mo5Cr4V2Co5 materials is adopted, so that the whole high-speed tool steel has good strength and hardness, the W6Mo5Cr4V2Co5 high-speed tool steel is tungsten-series general high-speed steel containing diamond, the red hardness and the high-temperature hardness are strong, the wear resistance is improved, the cutting performance is good, and the cutting effect after the roller shear blade is formed is ensured.

Drawings

The invention is further explained below with reference to the figures and examples:

FIG. 1 is a process flow diagram of the present invention.

Detailed Description

The present invention will be described in detail with reference to fig. 1, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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 one

A processing technology of a grinding knife of a soybean milk machine comprises the following steps:

s1: selecting materials;

s2: annealing;

s3: carrying out hot melting and injection molding;

s4: quenching;

s5: performing cold treatment;

s6: tempering;

s7: grinding;

s8: and (6) polishing.

In addition, the steel material selected in S1 is one of r12Mo1V1, H13K, LD, W18Cr4V and W6Mo5Cr4V2Co 5.

Furthermore, in S2, the annealing temperature is 640 ℃, the annealing time is 3.5h, and the annealing temperature is kept for 1h, and then the air cooling is carried out to the normal temperature.

Further, the blade forming die in the step S3 is made of high alloy die steel, and the smelting furnace is a high-temperature tube type smelting furnace.

Further, in S4, the workpiece is placed into a quenching furnace, heated to 550 ℃, insulated for 15min, heated to 750 ℃, insulated for 20min, cooled to 130 ℃, and taken out.

Further, cold treatment is carried out in S5, the cutter blade is placed in a liquid nitrogen cooling box for cold treatment below-185 ℃, and heat preservation is carried out for 24 hours.

Further, tempering in S6: and (3) placing the subzero treated workpiece into a 90kw air circulation resistance belt furnace, heating to 490 ℃, preserving heat for 3 hours, discharging, and cooling to room temperature.

Further, in S7, the grinding process uses a circular table surface grinder to perform rough machining and grinding process on the blade.

Further, polishing the workpiece in S8 until the dimensional tolerance is-0.001 mm and the surface roughness is less than Ra0.07 mu m, and cleaning the surface to finish machining after the workpiece is qualified.

Further, the polishing machine in S8 is a numerical control disc polishing machine, and ensures that the surface roughness of the formed blade is less than Ra0.08 μm.

Example two

A processing technology of a grinding knife of a soybean milk machine comprises the following steps:

s1: selecting materials;

s2: annealing;

s3: carrying out hot melting and injection molding;

s4: quenching;

s5: performing cold treatment;

s6: tempering;

s7: grinding;

s8: and (6) polishing.

In addition, the steel material selected in S1 is one of r12Mo1V1, H13K, LD, W18Cr4V and W6Mo5Cr4V2Co 5.

Furthermore, in S2, the annealing temperature is 720 ℃, the annealing time is 3.7h, the temperature is kept for 1.5h, and then the air cooling is carried out to the normal temperature.

Further, the blade forming die in the step S3 is made of high alloy die steel, and the smelting furnace is a high-temperature tube type smelting furnace.

Further, in S4, the workpiece is placed into a quenching furnace, heated to 570 ℃, insulated for 20min, heated to 770 ℃, insulated for 25min, cooled to 140 ℃ and taken out.

Further, cold treatment is carried out in S5, the cutter blade is placed in a liquid nitrogen cooling box for cold treatment below-185 ℃, and heat preservation is carried out for 24 hours.

Further, tempering in S6: and (3) placing the subzero treated workpiece into a 90kw air circulation resistance belt furnace, heating to 530 ℃, preserving heat for 3 hours, discharging, and cooling to room temperature.

Further, in S7, the grinding process uses a circular table surface grinder to perform rough machining and grinding process on the blade.

Further, polishing the workpiece in S8 until the dimensional tolerance is-0.001 mm and the surface roughness is less than Ra0.07 mu m, and cleaning the surface to finish machining after the workpiece is qualified.

Further, the polishing machine in S8 is a numerical control disc polishing machine, and ensures that the surface roughness of the formed blade is less than Ra0.08 μm.

EXAMPLE III

A processing technology of a grinding knife of a soybean milk machine comprises the following steps:

s1: selecting materials;

s2: annealing;

s3: carrying out hot melting and injection molding;

s4: quenching;

s5: performing cold treatment;

s6: tempering;

s7: grinding;

s8: and (6) polishing.

In addition, the steel material selected in S1 is one of r12Mo1V1, H13K, LD, W18Cr4V and W6Mo5Cr4V2Co 5.

Furthermore, in S2, the annealing temperature is 780 ℃ and the annealing time is 4h, and the annealing temperature is kept for 2h and then the annealing temperature is cooled to normal temperature.

Further, the blade forming die in the step S3 is made of high alloy die steel, and the smelting furnace is a high-temperature tube type smelting furnace.

Further, in S4, the workpiece is placed into a quenching furnace, heated to 600 ℃, kept for 25min, heated to 780 ℃, kept for 30min, cooled to 150 ℃ and taken out.

Further, cold treatment is carried out in S5, the cutter blade is placed in a liquid nitrogen cooling box for cold treatment below-185 ℃, and heat preservation is carried out for 24 hours.

Further, tempering in S6: and (3) placing the subzero treated workpiece into a 90kw air circulation resistance belt furnace, heating to 550 ℃, preserving heat for 3 hours, discharging, and cooling to room temperature.

Further, in S7, the grinding process uses a circular table surface grinder to perform rough machining and grinding process on the blade.

Further, polishing the workpiece in S8 until the dimensional tolerance is-0.001 mm and the surface roughness is less than Ra0.07 mu m, and cleaning the surface to finish machining after the workpiece is qualified.

Further, the polishing machine in S8 is a numerical control disc polishing machine, and ensures that the surface roughness of the formed blade is less than Ra0.08 μm.

The working principle is as follows: the processing technology of the grinding knife of the soybean milk machine comprises the steps of firstly selecting one of r12Mo1V1, H13K, LD, W18Cr4V and W6Mo5Cr4V2Co5 as a steel material, then placing the steel material in an annealing furnace for annealing treatment at 640-780 ℃ for 3.5-4H, preserving heat for 1-2H, then air-cooling to normal temperature, then melting the annealed steel material through a high-temperature tube furnace, pouring the melted steel material into a blade forming mold which is made of high-alloy mold steel for injection molding to form a rough blade workpiece for preliminary forming, then placing the workpiece in a quenching furnace, firstly heating to 550-600 ℃, preserving heat for 15-25 min, then heating to 750-780 ℃, preserving heat for 20-30 min, cooling to 130-150 ℃, taking out the workpiece, then placing the workpiece in a liquid nitrogen cooling box for cooling treatment below-185 ℃ and preserving heat for 24 hours, taking out the workpiece and placing the workpiece in a 90kw air circulation belt furnace, heating to 490-550 ℃, preserving heat for 3h, discharging, cooling to room temperature, then placing the workpiece on a circular platform plane grinding machine for rough machining, grinding, polishing after machining, using a numerical control disc polishing machine to enable the surface roughness of the blade to be less than Ra0.08 mu m, polishing the workpiece until the dimensional tolerance is-0.001 mm and the surface roughness is less than Ra0.07 mu m, and cleaning the surface after qualification to finish machining.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.