Flash frequency observation window of electron beam melting furnace

Abstract

The utility model provides an electron beam melting furnace flash frequency observation window which comprises an observation window assembly, the observation window assembly comprises a window body, transparent glass and a flash frequency assembly, an observation opening is eccentrically formed in the top surface of the window body, a transmission main shaft is rotationally arranged in the center of the window body, the transmission main shaft penetrates through the transparent glass, and the transparent glass penetrates through the observation opening. The orthographic projection of the transparent glass on the top surface of the window body covers the observation opening, and the transparent glass is rotationally connected with the window body; the stroboscopic assembly comprises a fixing piece and a stroboscopic substrate, the stroboscopic substrate is connected with the end, extending out of the transparent glass, of the transmission main shaft through the fixing piece, at least two slits in central symmetry are formed in the stroboscopic substrate, and at least one side of each slit is provided with a side vertical blocking piece. According to the utility model, the observation area can be well protected, the light transmittance is prevented from being influenced by the blockage of the slit, and the production efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of electron beam melting equipment, and relates to a flash frequency observation window of electron beam melting furnace. BACKGROUND

[0002] The electron beam melting furnace is a special vacuum metallurgical equipment, and the electron beam melting furnace cold bed melting technology is a metallurgical technology of combining the electron beam with the cold bed and melting under high vacuum conditions. Since the electron needs to run under high vacuum conditions, the high vacuum degree needs to be maintained by a unit, so that the vacuum degree in the furnace is in dynamic balance during the melting process due to uneven feeding and different gas release degrees of the materials. The electron beam forming property is relatively sensitive to the vacuum degree, and in order to ensure the accuracy and scanning effect of the scanning position of the electron beam, the electron beam forming and the scanning position of the electron beam need to be observed in real time, therefore, the transparency of the observation window glass is very important to ensure the effectiveness of the observation.

[0003] Under the melting state, the materials or internal impurities can form a large amount of volatile matter, steam, high-speed splashing molten droplets and other substances, which are easy to deposit on the cooling device of the observation port, so that the glass light transmittance at the observation port is greatly reduced, and even the observation window flash sheet observation slit is gradually blocked, so that the image acquisition quality is obviously reduced. In order to ensure the smooth progress of the melting and the product quality, the annular glass needs to be rotated to rotate the part with low glass light transmittance away from the observation port. After the annular glass completes a whole rotation, the contaminated glass and the flash sheet slit need to be cleaned, cleaned or replaced after the furnace is stopped, which causes the production cost to be increased and the work efficiency to be reduced.

[0004] CN102839060A discloses a cleaning liquid for the glass of the electron beam melting furnace, which uses an acid liquid mixed by industrial nitric acid and hydrofluoric acid at a volume ratio of 2:1 to clean the glass, and performs simple chemical corrosion on the adsorbed matter on the surface of the glass, and then uses clean water to clean, which is easy to cause corrosion on the surface of the glass, and a large amount of water stains and corrosion residues are adsorbed on the surface of the glass, so that the light transmission effect of the glass is poor, and the product quality is affected.

[0005] CN205209234U fills argon gas below the observation window glass to generate a pressure difference in the region, prevents the volatile matter, steam and the like in the melting furnace from being attached to the glass upward, and cooperates with the baffle to block the splashing particles, thereby prolonging the visible time of the observation window. However, the argon gas pressure and flow need to be controlled by the pressure reducing valve and the fine adjustment valve to ensure the safe operation of the vacuum melting furnace. Since the vacuum degree in the electron beam furnace is in dynamic balance, and the electron beam forming property is relatively sensitive to the vacuum degree, the argon gas filling amount and flow have a great influence on the vacuum degree in the furnace, and cannot be effectively and strictly controlled, which has a great risk to the melting process and the product quality of the melting.

[0006] CN2592656Y discloses a viewing window with rotating baffle, comprising base plate, first observation hole, rotating wheel, rotating wheel, spring, magnet and second observation hole, rotating baffle can solve the problem of frequent replacement of glass, and can more conveniently see the situation in vacuum chamber, thereby improving the yield of evaporator. But in actual use, due to the fact that the slit of the stroboscopic sheet is not protected, the volatile matter, steam, high-speed splashing molten droplets and other substances formed in the furnace can pass through the slit of the baffle to cause the inner layer glass of the observation hole area to be evaporated, and cause the slit of the stroboscopic sheet of the viewing window to be blocked, so that the light transmittance of the glass of the observation hole area of the viewing window is greatly reduced, so that the image acquisition quality is obviously reduced, and the actual observation effect of the viewing window is affected, and long-time work is difficult to guarantee.

[0007] Therefore, it is necessary to protect the viewing window in an effective way to improve product quality, save production cost and improve work efficiency. Practical new type content

[0008] In view of the deficiencies in the prior art, the purpose of the present application is to provide a stroboscopic viewing window for electron beam melting furnace, which effectively solves the problem of reducing the light transmittance of the glass of the observation hole area caused by volatile matter, steam, high-speed splashing molten droplets and other substances in the electron beam furnace, and also alleviates the problem of slit blockage.

[0009] In order to achieve this purpose, the present application adopts the following technical solutions:

[0010] The present application provides a stroboscopic viewing window for electron beam melting furnace, which comprises a viewing window assembly, the viewing window assembly comprising a window body, a transparent glass and a stroboscopic assembly, the top surface of the window body being eccentrically provided with an observation hole, the center of the window body being rotatably provided with a transmission main shaft, the transmission main shaft penetrating the transparent glass and connecting the stroboscopic assembly, the transparent glass being in orthographic projection on the top surface of the window body covering the observation hole, and the transparent glass being rotatably connected with the window body; the stroboscopic assembly comprising a fixing member and a stroboscopic substrate, the stroboscopic substrate being connected with the end of the transmission main shaft protruding out of the transparent glass through the fixing member, at least two slits being centrally symmetrically formed on the stroboscopic substrate, and a side standing baffle being arranged on at least one side of the slit.

[0011] The observation window assembly of the utility model can adjust the transparent glass from the outside, so that the transparent glass can rotate freely around the center, and the transparent glass part that has been blurred can be converted, and the part with high light transmittance is rotated to correspond to the direct view area of the observation port, so that the observer can observe the situation in the furnace body well from the beginning to the end, the production cost is reduced, and the production efficiency is improved.

[0012] As an optimal technical scheme of the utility model, the observation window assembly further comprises an adjusting wheel and a glass transmission member, the adjusting wheel is arranged outside the window body, one end of the glass transmission member is connected with the adjusting wheel, and the other end of the glass transmission member extends into the window body and is connected with the transparent glass.

[0013] As an optimal technical scheme of the utility model, the transparent glass is annular, and the transparent glass is coaxially arranged with the transmission main shaft.

[0014] As an optimal technical scheme of the utility model, the observation window assembly further comprises a first fixing seat and a limiting piece, the first fixing seat is connected with the window body, the transparent glass is rotatably arranged on the first fixing seat, and the limiting piece is detachably connected with the first fixing seat through the inner ring of the transparent glass.

[0015] The utility model can adjust the transparent glass from the outside of the observation window assembly, so that the transparent glass can rotate freely around the center, the transparent glass part that has been blurred can be converted, the part with high light transmittance is rotated to correspond to the direct view area of the observation port, so that the observer can observe the situation in the furnace body well from the beginning to the end, the production cost is reduced, and the production efficiency is improved.

[0016] As an optimal technical scheme of the utility model, the slit is arranged along the radial direction of the stroboscopic base plate, the slit is in the form of a straight line, and the side limiting piece extends along the length direction of the slit.

[0017] The length of the side limiting piece is greater than or equal to the length of the slit.

[0018] As an optimal technical scheme of the utility model, the length of the side limiting piece is greater than or equal to the length of the slit.

[0019] The width of the side stop piece is 3-5mm, for example, it can be 3mm, 3.2mm, 3.5mm, 3.8mm, 4mm, 4.2mm, 4.5mm, 4.6mm, 4.8mm or 5mm, but is not limited to the listed values, and other values not listed in the range are also applicable.

[0020] As a preferred technical scheme of the present application, the side stop piece is a stainless steel piece, and the side stop piece is welded and fixed on the surface of the stroboscopic base plate.

[0021] In the present application, the side stop piece is arranged close to the edge of the slit, and when the side stop piece rotates at high speed with the stroboscopic base plate, it can effectively drive away volatile substances, steam, high-speed splashing molten droplet substances and the like, avoid blocking the slit, and also improve the light transmittance of the observation window, greatly reduce the cleaning, cleaning or replacement frequency of the slit, and help to improve the production efficiency.

[0022] As a preferred technical scheme of the present application, the fixing member comprises a second fixing seat and a fastening piece, the second fixing seat is sleeved on the transmission main shaft, the second fixing seat penetrates through the stroboscopic base plate and is detachably connected with the fastening piece.

[0023] As a preferred technical scheme of the present application, the second fixing seat is bolted with the stroboscopic base plate and the fastening piece respectively.

[0024] As a preferred technical scheme of the present application, the observation window assembly further comprises a driving motor, the driving motor is drivingly connected with the transmission main shaft and is used for driving the stroboscopic base plate to rotate.

[0025] Compared with the prior art, the present application has the following advantages:

[0026] The electronic beam smelting furnace stroboscopic observation window provided by the present application can avoid blocking the slit, ensure the light transmittance of the observation window, more clearly observe the situation inside the furnace body, and is not affected by the vacuum degree, can be observed for a long time, helps to improve the product quality, reduces the probability of equipment cleaning, replacement and shutdown, greatly reduces the production cost, and improves the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 The structure diagram of the electronic beam smelting furnace stroboscopic observation window provided by the present application is provided as a specific embodiment of the present application;

[0028] Figure 2 The structure diagram of the stroboscopic assembly provided by the present application is provided as a specific embodiment of the present application;

[0029] Figure 3 The schematic diagram of the transparent glass provided by the present application is provided as a specific embodiment of the present application.

[0030] Wherein, 1-window; 2-observation port; 3-driving main shaft; 4-first fixed seat; 5-transparent glass; 6-limiting sheet; 7-second fixed seat; 8-stroboscopic base plate; 9-slit; 10-fastening sheet; 11-glass transmission member; 12-adjusting wheel; 13-side vertical stop sheet. DETAILED DESCRIPTION

[0031] It should be understood that, in the description of the present application, the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0032] It should be noted that, in the description of the present application, unless otherwise specified and limited, the terms "provided", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood through specific circumstances.

[0033] The technical solutions of the present application will be further illustrated below in conjunction with the drawings and through specific embodiments.

[0034] The present application provides a kind of electronic beam smelting furnace stroboscopic observation window, such as Figure 1 As shown in Figure 2 It shows that it includes observation window assembly, the observation window assembly includes window body 1, transparent glass 5 and stroboscopic component, the top surface of the window body 1 is eccentric and provided with observation port 2, the center of the window body 1 is rotationally provided with driving main shaft 3, the driving main shaft 3 penetrates the transparent glass 5, and is connected with the stroboscopic component, the transparent glass 5 is orthogonally projected on the top surface of the window body 1 and covers the observation port 2, and the transparent glass 5 is rotationally connected to the window body 1.

[0035] The stroboscopic component includes a fixing member and a stroboscopic substrate 8, the stroboscopic substrate 8 is connected to the transmission main shaft 3 extending from one end of the transparent glass 5 through the fixing member, at least two slits 9 which are centrally symmetrical are arranged on the stroboscopic substrate 8, and side vertical stop pieces 13 are arranged on at least one side of the slits 9. In the application process, the observer can observe the inside of the furnace body through the slits 9 on the transparent glass 5 and the stroboscopic substrate 8 in sequence through the observation port 2, and the inside of the furnace body is observed by using the visual persistence principle of the human eye. The side vertical stop pieces 13 are used for driving away volatile matter, steam, high-speed splashing molten droplets and other substances in the furnace body, so as to avoid that the above-mentioned substances pass through the slits 9 to cause the transparent glass 5 in the observation port 2 area to be blurred, the light transmittance is reduced, and the problem that the slits 9 are blocked by the above-mentioned substances is also avoided.

[0036] The observation window assembly in the utility model adopts the movable observation window structure commonly used by the person skilled in the art, and the structure is not specifically limited. Exemplarily, the observation window assembly can include necessary wires, an upper cover assembly, a base assembly, a connecting fastener, a rotary motor, a handle and the like for realizing a complete process, and the person skilled in the art needs to reasonably adjust, add or delete according to the actual production needs.

[0037] In some embodiments, as shown in Figure 3 The observation window assembly also includes an adjusting wheel 12 and a glass transmission member 11, the adjusting wheel 12 is arranged outside the window body 1, one end of the glass transmission member 11 is connected to the adjusting wheel 12, the other end of the glass transmission member 11 extends into the window body 1 and is connected to the transparent glass 5, the observer adjusts the adjusting wheel 12, drives the transparent glass 5 to rotate through the glass transmission member 11 Figure 3 The arrow in the figure indicates the direction in which the glass transmission member 11 drives the transparent glass 5 to rotate), and the clear and transparent part is rotated into the direct viewing area of the observation area.

[0038] Specifically, the transparent glass 5 is annular, and the transparent glass 5 is coaxially arranged with the transmission main shaft 3. The specification and material of the transparent glass 5 are not specifically limited in the utility model, and any material glass commonly used in the art can be used, and the specification matching the size of the window body 1 is selected. Exemplarily, the transparent glass 5 can use transparent lead glass, which has high structural strength and good light transmittance.

[0039] Further, the observation window assembly further comprises a first fixing seat 4 and a limiting sheet 6, the first fixing seat 4 is connected with the window body 1, the transparent glass 5 is rotatably arranged on the first fixing seat 4, and the limiting sheet 6 is detachably connected with the first fixing seat 4 by penetrating the inner ring of the transparent glass 5. The first fixing seat 4 in the utility model is used for supporting the transparent glass 5, and ensures that a gap is left between the window body 1 and the transparent glass 5, so that the transparent glass 5 can be smoothly rotated and is not hindered. The limiting piece can be bolted with the first fixing seat 4, so that the transparent glass 5 is prevented from falling off during rotation.

[0040] The specific structure, connection form and transmission mode of the adjusting wheel 12 and the glass transmission piece 11 are not limited in the utility model, and any structure known to those skilled in the art capable of driving the transparent glass 5 to rotate around the center of a circle can be adopted. The glass transmission piece 11 in the utility model can directly drive the transparent glass 5 to rotate, or can indirectly drive the transparent glass 5 to rotate by driving the first fixing seat 4, and those skilled in the art can make adaptive adjustment according to the overall structure of the observation window.

[0041] In some embodiments, the slit 9 is arranged along the radial direction of the stroboscopic substrate 8, the slit 9 is in the form of a linear strip, and the side standing baffle 13 extends along the length direction of the slit 9, effectively driving volatile substances, steam, high-speed splashing molten liquid droplet substances and the like. Further, the length of the side standing baffle 13 is greater than or equal to the length of the slit 9, specifically, the length of the side standing baffle 13 is greater than or equal to 50mm, the width is 3-5mm, and when the length of the slit 9 is 50mm, the specification of the side standing baffle 13 is preferably 4mm*50mm. The side standing baffle 13 is a stainless steel sheet, is welded and fixed on the surface of the stroboscopic substrate 8, is arranged close to the edge of the slit 9, and can rotate with the high-speed rotation of the stroboscopic substrate 8.

[0042] In some embodiments, the fixing piece comprises a second fixing seat 7 and a fastening sheet 10, the second fixing seat 7 is sleeved on the transmission main shaft 3, the second fixing seat 7 penetrates the stroboscopic substrate 8 and is detachably connected with the fastening sheet 10. Specifically, the second fixing seat 7 is bolted with the stroboscopic substrate 8 and the fastening sheet 10 respectively.

[0043] In some embodiments, the observation window assembly is provided with a driving motor, the driving motor is transmissionally connected with the transmission main shaft 3 and is used for driving the stroboscopic substrate 8 to rotate. In the application process, the driving motor is started, the transmission main shaft 3 starts to rotate, and then drives the second fixing seat 7, the stroboscopic substrate 8 and the fastening sheet 10 to rotate at a high speed at the same time, the power of the driving motor can be adjusted to adjust the rotating speed to adapt to different observation scenes.

[0044] The utility model discloses a rotatable transparent glass 5 and flash substrate 8 are used, utilize the visual persistence principle of human eye, make the observer can observe the situation in the furnace body, realize the conversion of the fuzzy part and the clear and transparent part of the transparent glass in the direct vision area of the observation port, and the side vertical baffle 13 is arranged on the side of the slit 9, with the high -speed rotation of the flash substrate, can effectively drive the volatile matter, steam, high -speed splashing molten droplet material, avoid reducing the light transmittance in the observation area, reduce the pollution of transparent glass.

[0045] The applicant declares that the above description is only a specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, and the skilled person in the art should understand that any change or replacement that the person skilled in the art can easily think of within the technical range disclosed by the utility model falls within the protection scope and the disclosure range of the utility model.

Claims

1. An electron beam melting furnace flash frequency sight window characterized by, The electron beam melting furnace stroboscopic observation window comprises an observation window assembly, the observation window assembly comprises a window body, a transparent glass and a stroboscopic component, an observation port is arranged eccentrically on the top surface of the window body, a transmission main shaft is arranged rotatably in the center of the window body, the transmission main shaft penetrates the transparent glass and is connected with the stroboscopic component, the transparent glass covers the observation port in orthographic projection on the top surface of the window body, and the transparent glass is rotatably connected with the window body. The stroboscopic component comprises a fixing member and a stroboscopic substrate, the stroboscopic substrate is connected with the end of the transmission main shaft protruding out of the transparent glass through the fixing member, at least two slits are arranged symmetrically in the center of the stroboscopic substrate, and a side standing stop sheet is arranged on at least one side of the slit.

2. The e-beam melting furnace flash frequency viewing window of claim 1, wherein, The observation window assembly further comprises an adjusting wheel and a glass transmission member, the adjusting wheel is arranged outside the window body, one end of the glass transmission member is connected with the adjusting wheel, and the other end of the glass transmission member extends into the window body and is connected with the transparent glass.

3. The e-beam melting furnace flash frequency viewing window of claim 2, wherein, The transparent glass is annular, and the transparent glass is coaxially arranged with the transmission main shaft.

4. The e-beam melting furnace flash frequency viewing window of claim 3, wherein, The observation window assembly further comprises a first fixing seat and a limiting sheet, the first fixing seat is connected with the window body, the transparent glass is rotatably arranged on the first fixing seat, and the limiting sheet is detachably connected with the first fixing seat through the inner ring of the transparent glass.

5. The e-beam melting furnace flash frequency viewing window of claim 1, wherein, The slit is arranged along the radial direction of the stroboscopic substrate, the slit is in the shape of a straight line, and the side standing stop sheet extends along the length direction of the slit. The length of the side standing stop sheet is greater than or equal to the length of the slit.

6. The e-beam melting furnace flash frequency viewing window of claim 5, wherein, The length of the side standing stop sheet is greater than or equal to the length of the slit. The length of the side standing stop sheet is greater than or equal to the length of the slit.

7. The e-beam melting furnace flash frequency viewing window of claim 5 or 6, wherein, The width of the side standing stop sheet is 3-5 mm.

8. The e-beam melting furnace flash frequency viewing window of claim 1, wherein, The side standing stop sheet is a stainless steel sheet, and the side standing stop sheet is welded and fixed on the surface of the stroboscopic substrate.

9. The e-beam melting furnace flash frequency viewing window of claim 8, wherein, The fixing member comprises a second fixing seat and a fastening sheet, the second fixing seat is sleeved on the transmission main shaft, the second fixing seat penetrates the stroboscopic substrate and is detachably connected with the fastening sheet.

10. The e-beam melting furnace flash frequency viewing window of claim 1, wherein, The second fixing seat is respectively bolted with the stroboscopic substrate and the fastening sheet. The observation window assembly further comprises a driving motor, the driving motor is transmissionally connected with the transmission main shaft and is used for driving the stroboscopic substrate to rotate.

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