阅读说明：本技术 一种异形截面超细电解电极锻挤模具及成型工艺 (Forging and extruding die and forming process for superfine electrolytic electrode with special-shaped section ) 是由 夏赟 于 2020-12-21 设计创作，主要内容包括：本发明提供一种异形截面超细电解电极锻挤模具及成型工艺,该锻挤模具包括底座,底座上固定有锻挤模具座和压紧机构,锻挤模具座上设有固定操作腔,固定操作腔的顶面开口以及与顶面相连的一侧侧面开口,压紧机构设于固定操作腔开口的一侧侧面处,固定操作腔内依次放置有锻挤固定模和锻挤活动模,锻挤固定模位于固定操作腔的内侧,锻挤活动模位于固定操作腔的外侧,压紧机构可压紧作用于锻挤活动模,锻挤固定模内侧面上设有纵向设置的第一模腔,锻挤活动模的内侧面上设有纵向设置的第二模腔,第一模腔和第二模腔相配合并形成锻挤模腔。本发明能够经济高效的制造出强度高、使用寿命长、制造成本低的异形截面超细电解电极,且材料的利用率也较高。(The invention provides a forging and extruding die for an ultrafine electrolytic electrode with a special-shaped section and a forming process, the forging and extruding die comprises a base, wherein a forging and extruding die seat and a pressing mechanism are fixed on the base, a fixed operation cavity is arranged on the forging and extruding die seat, the top surface of the fixed operation cavity is opened, one side surface of the fixed operation cavity is opened, the pressing mechanism is arranged at the side surface of the opened side surface of the fixed operation cavity, a forging and extruding fixed die and a forging and extruding movable die are sequentially arranged in the fixed operation cavity, the forging and extruding fixed die is positioned at the inner side of the fixed operation cavity, the pressing mechanism can press and act on the forging and extruding movable die, a longitudinally arranged first die cavity is arranged on the inner side surface of the forging and extruding fixed die, a longitudinally arranged second. The method can economically and efficiently manufacture the special-shaped section superfine electrolytic electrode with high strength, long service life and low manufacturing cost, and has higher material utilization rate.)

1. A forging and extruding die for superfine electrolytic electrodes with special-shaped cross sections is characterized by comprising a base, wherein a forging and extruding die seat and a pressing mechanism are fixed on the base, the forging and extruding die seat is provided with a fixed operation cavity, the top surface of the fixed operation cavity is opened, and the side surface of the fixed operation cavity is opened at one side connected with the top surface, the pressing mechanism is arranged at the side surface of one side of the opening of the fixed operation cavity, a forging and extruding fixed die and a forging and extruding movable die are sequentially arranged in the fixed operation cavity, the fixed forging and extruding die is positioned at the inner side of the fixed operating cavity, the movable forging and extruding die is positioned at the outer side of the fixed operating cavity, the pressing mechanism can press and act on the movable forging and extruding die, a first die cavity which is longitudinally arranged is arranged on the inner side surface of the fixed forging and extruding die, and a second die cavity which is longitudinally arranged is arranged on the inner side surface of the movable forging and extruding die, and the first die cavity is matched with the second die cavity to form a forging and extruding die cavity.

2. The forging and extruding die for the superfine electrolysis electrode with the special-shaped cross section as claimed in claim 1, wherein the forging and extruding die cavity consists of a clamping part die cavity and an electrolysis electrode special-shaped cross section die cavity which are communicated with each other.

3. The forging and extruding die for the superfine electrolysis electrode with the special-shaped section as claimed in claim 2, wherein the cross section of the die cavity of the special-shaped section of the electrolysis electrode is in a regular polygon shape or a polygonal star shape.

4. The forging and extruding die for the special-shaped section ultrafine electrolysis electrodes as claimed in claim 1, wherein two sets of the pressing mechanisms are provided, the two sets of the pressing mechanisms are symmetrically arranged, each pressing mechanism comprises a nut seat, the nut seats are fixed on the base, a screw rod is connected to each nut seat in a threaded mode, one end of each screw rod faces towards the fixed operation cavity, and a hand wheel is connected to the other end of each screw rod.

5. The forging and extruding die for the special-shaped section ultrafine electrolysis electrode as claimed in claim 1, wherein a plurality of guide pins are fixed on the forging and extruding fixed die and symmetrically distributed on two sides of the first die cavity, guide holes corresponding to the guide pins one to one are formed in the forging and extruding movable die, the guide pins can be movably inserted into the guide holes, and the guide holes are also symmetrically distributed on two sides of the second die cavity.

6. The forging and extruding die for the special-shaped section ultrafine electrolysis electrode as claimed in claim 5, wherein a plurality of pin fixing holes are formed in the forging and extruding fixed die, the pin fixing holes correspond to the guide pins one to one, and the forging and extruding fixed die is in interference fit with the guide pins through the pin fixing holes.

7. The forging and extruding die for the superfine electrolysis electrode with the special-shaped section as claimed in claim 1, wherein the material adopted by the forging and extruding fixed die and the forging and extruding movable die is HM3 die steel.

8. A molding process of an ultrafine electrolysis electrode with a special-shaped section is characterized in that the forging and extruding die of the ultrafine electrolysis electrode with the special-shaped section as claimed in any one of claims 1 to 7 is adopted, and the steps are as follows:

s1, placing the forging and extruding fixed die and the forging and extruding movable die in a preheating furnace at the temperature of 420 ℃ for heating for 2.5 hours, and preheating a forging and extruding die cavity;

s2, taking an unoxidized red copper wire with a certain length as a blank, and heating the blank to the phase transition temperature of 800-860 ℃;

s3, placing the preheated forging and extruding fixed die and the preheated forging and extruding movable die in the step S1 on a forging and extruding die seat, placing the blank heated in the step S2 in a forging and extruding die cavity, and acting the forging and extruding movable die by using a forging and extruding working head of a forging and extruding machine so as to carry out forging and extruding work in the horizontal direction;

s4, after the forging and extruding work in the horizontal direction is finished, the pressing mechanism acts on the movable forging and extruding die to press the movable forging and extruding die and the fixed forging and extruding die, and then the forging and extruding work is carried out along the axial direction of the forging and extruding die cavity by using the forging and extruding working head of the forging and extruding machine;

and S5, after the axial forging and extruding work is finished, loosening the pressing structure, taking out the superfine electrolytic electrode with the special-shaped section in the forging and extruding die cavity, and then cleaning and cooling to obtain the finished superfine electrolytic electrode with the special-shaped section.

9. The process for forming an ultrafine electrolytic electrode with a profiled cross section as claimed in claim 8, wherein the forging pressure of the forging press is not less than 500MP/cm²The forging speed is 300mm/min, the average forging temperature is 460-480 ℃, and the forging ratio is not less than 5.

10. The process of claim 8, wherein the temperature of the cleaning solution used for cleaning and cooling in step S5 is controlled to be 25-35 ℃, the cleaning solution is a mixture of ethanol and water, and the mass fraction of the ethanol is 5-8%.

Technical Field

The invention relates to a forging and extruding die for an ultrafine electrolytic electrode with a special-shaped section and a forming process.

Background

The 'special-shaped section superfine electrolytic electrode' is a special electrolytic electrode for processing nozzle holes for production of epidemic prevention melt-blown cloth, special-shaped section superfine fibers and the like, and can also be widely used for electrolytic processing of other special-shaped section holes. The existing processing of the superfine electrolytic electrode with the special-shaped section usually needs a special machine tool, and has the disadvantages of complex processing procedure, high cost, low strength, short service life and about 50 percent of material utilization rate. Therefore, a set of special-shaped section superfine electrolytic electrode forging and extruding die and a forming method are designed to prepare the special-shaped section superfine electrolytic electrode, which are urgently needed in the application field of special electrodes for processing melt-blown head holes for production of epidemic prevention melt-blown cloth, special-shaped section superfine fibers and the like.

Disclosure of Invention

The invention aims to provide a forging and extruding die for an irregular-section superfine electrolytic electrode and a forming process thereof aiming at the defects of the prior art, so that the irregular-section superfine electrolytic electrode with high strength, long service life and low manufacturing cost can be economically and efficiently manufactured, and the utilization rate of materials is higher.

The invention provides the following technical scheme:

a forging and extruding die for superfine electrolytic electrodes with special-shaped cross sections comprises a base, wherein a forging and extruding die seat and a pressing mechanism are fixed on the base, the forging and extruding die seat is provided with a fixed operation cavity, the top surface of the fixed operation cavity is opened, and the side surface of the fixed operation cavity is opened at one side connected with the top surface, the pressing mechanism is arranged at the side surface of one side of the opening of the fixed operation cavity, a forging and extruding fixed die and a forging and extruding movable die are sequentially arranged in the fixed operation cavity, the fixed forging and extruding die is positioned at the inner side of the fixed operating cavity, the movable forging and extruding die is positioned at the outer side of the fixed operating cavity, the pressing mechanism can press and act on the movable forging and extruding die, a first die cavity which is longitudinally arranged is arranged on the inner side surface of the fixed forging and extruding die, and a second die cavity which is longitudinally arranged is arranged on the inner side surface of the movable forging and extruding die, and the first die cavity is matched with the second die cavity to form a forging and extruding die cavity.

Preferably, the forging and extruding die cavity consists of a clamping part die cavity and an electrolysis electrode special-shaped section die cavity which are communicated.

Preferably, the cross section of the cavity of the special-shaped cross section part of the electrolysis electrode is in a regular polygon or a polygonal star shape.

Preferably, the pressing mechanisms are provided with two sets, the two sets of pressing mechanisms are symmetrically arranged, each pressing mechanism comprises a nut seat, the nut seats are fixed on the base, the nut seats are connected with a lead screw in a threaded mode, one end of the lead screw faces towards the fixed operation cavity, and the other end of the lead screw is connected with a hand wheel.

Preferably, a plurality of guide pins are fixed on the forging and extruding fixed die and symmetrically distributed on two sides of the first die cavity, guide holes which correspond to the guide pins in a one-to-one mode are formed in the forging and extruding movable die, the guide pins can be movably inserted into the guide holes, and the guide holes are also symmetrically distributed on two sides of the second die cavity.

Preferably, a plurality of pin fixing holes are formed in the forging and extruding fixed die, the pin fixing holes correspond to the guide pins one to one, and the forging and extruding fixed die is in interference fit with the guide pins through the pin fixing holes.

Preferably, the material adopted by the forging and extruding fixed die and the forging and extruding movable die is HM3 die steel.

The forming process of the special-shaped section superfine electrolytic electrode adopts the special-shaped section superfine electrolytic electrode forging and extruding die and comprises the following steps:

s1, placing the forging and extruding fixed die and the forging and extruding movable die in a preheating furnace at the temperature of 420 ℃ for heating for 2.5 hours, and preheating a forging and extruding die cavity;

s2, taking an unoxidized red copper wire with a certain length as a blank, and heating the blank to the phase transition temperature of 800-860 ℃;

s3, placing the preheated forging and extruding fixed die and the preheated forging and extruding movable die in the step S1 on a forging and extruding die seat, placing the blank heated in the step S2 in a forging and extruding die cavity, and acting the forging and extruding movable die by using a forging and extruding working head of a forging and extruding machine so as to carry out forging and extruding work in the horizontal direction;

s4, after the forging and extruding work in the horizontal direction is finished, the pressing mechanism acts on the movable forging and extruding die to press the movable forging and extruding die and the fixed forging and extruding die, and then the forging and extruding work is carried out along the axial direction of the forging and extruding die cavity by using the forging and extruding working head of the forging and extruding machine;

and S5, after the axial forging and extruding work is finished, loosening the pressing structure, taking out the superfine electrolytic electrode with the special-shaped section in the forging and extruding die cavity, and then cleaning and cooling to obtain the finished superfine electrolytic electrode with the special-shaped section.

Preferably, a forging pressThe forging pressure is more than or equal to 500MP/cm²The forging speed is 300mm/min, the average forging temperature is 460-480 ℃, and the forging ratio is not less than 5.

Preferably, the temperature of the cleaning solution used for cleaning and cooling in the step S5 is controlled to be 25-35 ℃, the cleaning solution is a mixed solution of ethanol and water, and the mass fraction of the ethanol is 5-8%.

The invention has the beneficial effects that:

the forging and extruding die for the special-shaped section superfine electrolytic electrode is simple in structure, convenient to process and use, the special-shaped section superfine electrolytic electrode with high strength, long service life and low manufacturing cost can be economically and efficiently manufactured by adopting a forming process of the forging and extruding die, the utilization rate of materials is high, the forming process also greatly shortens the process flow, and the equipment investment is reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of the horizontal forging operation of the present invention;

FIG. 2 is a schematic view of the axial forging of the present invention;

FIG. 3 is a schematic top view of the swaging die block of the present invention;

fig. 4 is a sectional view taken along a-a in fig. 3.

Labeled as: 1. forging and extruding the working head; 2. forging and extruding the die base; 21. fixing the operation cavity; 3. a hold-down mechanism; 31. a nut seat; 32. a screw rod; 33. a hand wheel; 4. forging and extruding the fixed die; 41. a guide pin; 42. a pin fixing hole; 5. forging and extruding the movable die; 51. a guide hole; 6. a forging die cavity; 61. a clamping portion cavity; 62. the electrolysis electrode has a cavity with a special-shaped section part.

Detailed Description

As shown in fig. 1 to 4, a forging and extruding die for an ultrafine electrolysis electrode with a special-shaped cross section comprises a base (not shown in the figures), a forging and extruding die base 2 and a pressing mechanism 3 are fixed on the base, a fixed operation cavity 21 is arranged on the forging and extruding die base 2, an opening is formed in the top surface of the fixed operation cavity 21, and an opening is formed in one side surface connected with the top surface, the pressing mechanism 3 is arranged on the side surface of the opening of the fixed operation cavity 21, two sets of pressing mechanisms 3 are arranged, the two sets of pressing mechanisms 3 are symmetrically arranged, the pressing mechanism 3 comprises a nut base 31, the nut base 31 is fixed on the base, a screw 32 is connected to the nut base 31 in a threaded manner, one end of the screw 32 faces the fixed operation cavity 21, and the other end of the screw 32 is connected with a hand wheel 33, and.

A fixed forging and extruding die 4 and a movable forging and extruding die 5 are sequentially arranged in the fixed operating cavity 21, the fixed forging and extruding die 4 is positioned on the inner side of the fixed operating cavity 21, the movable forging and extruding die 5 is positioned on the outer side of the fixed operating cavity 21, and the pressing mechanism 3 can press and act on the movable forging and extruding die 5. The material adopted by the forging fixed die 4 and the forging movable die 5 is HM3 die steel, the service life of the die steel is improved by 2-10 times compared with dies such as 3Cr2W8V steel, 5CrNiMo steel, 4Cr5W2VSi steel and the like, and the early failure of the die caused by thermal wear, thermal fatigue, thermal cracking and the like can be effectively overcome. The inner side surface of the forging and extruding fixed die 4 is provided with a first die cavity which is longitudinally arranged, the inner side surface of the forging and extruding movable die 5 is provided with a second die cavity which is longitudinally arranged, and the first die cavity and the second die cavity are matched and form a forging and extruding die cavity 6. The forging and extruding die cavity 6 is composed of a clamping part die cavity 61 and an electrolysis electrode special-shaped section part die cavity 62 which are communicated, the section of the electrolysis electrode special-shaped section part die cavity 62 is in a regular polygon or a polygonal star shape, the special-shaped section superfine electrolysis electrode is composed of a clamping part and an electrolysis electrode special-shaped section part, the forging and extruding die cavity 6 corresponds to the shape of the special-shaped section superfine electrolysis electrode, and the minimum size of the electrolysis electrode special-shaped section part is 0.2 mm.

The fixed forging and extruding die 4 is fixed with a plurality of guide pins 41, the guide pins 41 are symmetrically distributed on two sides of the first die cavity, the movable forging and extruding die 5 is provided with guide holes 51 which are in one-to-one correspondence with the guide pins 41, the guide pins 41 can be movably inserted into the guide holes 51, the guide holes 51 are also symmetrically distributed on two sides of the second die cavity, the fixed forging and extruding die 4 is provided with a plurality of pin fixing holes 42, the pin fixing holes 42 are in one-to-one correspondence with the guide pins 41, and the fixed forging and extruding die 4 is in interference fit with the guide pins 41 through the pin fixing holes 42. By the action of the guide pin 41, it is ensured that no misalignment occurs between the fixed forging die 4 and the movable forging die 5 during the molding process, which helps to ensure the quality of the finished product.

The forming process of the special-shaped section superfine electrolytic electrode adopts the special-shaped section superfine electrolytic electrode forging and extruding die and comprises the following steps:

s1, placing the forging fixed die 4 and the forging movable die 5 in a preheating furnace at 420 ℃ for heating for 2.5 hours, and preheating the forging die cavity 6;

s2, taking an unoxidized red copper wire with a certain length as a blank, and heating the blank to the phase transition temperature of 800-860 ℃;

s3, placing the forging and extruding fixed die 4 and the forging and extruding movable die 5 which are preheated in the step S1 on the forging and extruding die seat 2, placing the blank heated in the step S2 in the forging and extruding die cavity 6, and acting the forging and extruding movable die 5 by using a forging and extruding working head of a forging and extruding machine so as to carry out forging and extruding work in the horizontal direction;

s4, after the horizontal forging operation is finished, the pressing mechanism 3 acts on the movable forging and extruding die 5 to press the movable forging and extruding die 5 and the fixed forging and extruding die 4, and then the forging and extruding working head of the forging and extruding machine is used for performing the forging and extruding operation along the axial direction of the forging and extruding die cavity 6;

s5, after the axial forging and extruding work is finished, loosening the compression structure, taking out the special-shaped section superfine electrolytic electrode in the forging and extruding die cavity 6, cleaning and cooling to obtain the finished product special-shaped section superfine electrolytic electrode, wherein the temperature of cleaning liquid used for cleaning and cooling is controlled to be 25-35 ℃, the cleaning liquid is mixed liquid of ethanol and water, and the mass fraction of the ethanol is 5-8%.

The forging pressure of the forging extruder in the process is more than or equal to 500MP/cm²The forging speed is 300mm/min, the average forging temperature is 460-480 ℃, and the forging ratio is not less than 5.

The forging and extruding die for the special-shaped section superfine electrolytic electrode is simple in structure, convenient to process and use, the special-shaped section superfine electrolytic electrode with high strength, long service life and low manufacturing cost can be economically and efficiently manufactured by adopting a forming process of the forging and extruding die, the utilization rate of materials is high, the forming process also greatly shortens the process flow, and the equipment investment is reduced.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.