CN110815504B - Processing technology of ceramic tile stamping die - Google Patents

Processing technology of ceramic tile stamping die Download PDF

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Publication number
CN110815504B
CN110815504B CN201911052597.3A CN201911052597A CN110815504B CN 110815504 B CN110815504 B CN 110815504B CN 201911052597 A CN201911052597 A CN 201911052597A CN 110815504 B CN110815504 B CN 110815504B
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China
Prior art keywords
stamping die
die
adhesive
working surface
ceramic tile
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CN201911052597.3A
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CN110815504A (en
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陈特夫
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Foshan Shiwan Ceramic Industry Research Institute Co ltd
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Foshan Shiwan Ceramic Industry Research Institute Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00Moulds; Cores; Mandrels
    • B28B7/0058Moulds, cores or mandrels with provisions concerning the elimination of superfluous material; Moulds with burr-removing means provided therein or carried thereby

Abstract

The invention discloses a processing technology of a ceramic tile stamping die, which comprises the steps of coating an adhesive on the working surface of the stamping die, and then pressing the adhesive to generate an adhesive layer on the working surface of the stamping die; before the working surface of the stamping die is coated with the adhesive, a groove is arranged on the inner side of a die cutting edge of the stamping die; the cutting edge of the die is produced by forming a groove on a die base body, surfacing by adopting high-chromium wear-resistant alloy steel to generate a surfacing part, and then quenching, strengthening and milling the surfacing part. According to the processing technology of the ceramic tile stamping die, the grooves are formed, so that the adhesive layer can be firmly adhered to the working surface of the stamping die, and the adhesive layer is not easy to fall off; the cutting edge of the die has the characteristics of high hardness (more than HRC 58), wear resistance, high toughness and corrosion resistance, and the service life of the cutting edge of the die is more than 50% longer than that of the conventional die.

Description

Processing technology of ceramic tile stamping die
Technical Field
The invention relates to the field of processing of stamping dies, in particular to a processing technology of a ceramic tile stamping die.
Background
At present, the manufacturing technology of ceramic tile stamping dies commonly used in the world is to use medium carbon steel or medium carbon alloy steel as a base material, form a groove on the periphery of a die base body, build up weld the groove by using wear-resistant alloy, form a die cutting edge with a specified size by milling and grinding, and compound a layer of high-elasticity and non-powder-sticking PU glue (namely polyurethane glue) on the working surface of a stamping die (namely the surface of a pressed brick blank). When the stamping die is used, the cutting edge of the die is mainly responsible for cutting redundant blanks, so that the cutting edge of the die is abraded due to friction with the blanks, and the die fails when the abrasion reaches a certain degree; simultaneously, the mould is in the use, also can lead to the mould to become invalid because of the glue film drops, then need shut down at this moment and lift off the mould, change or maintain. The condition that the glue layer falls off can easily appear before the mould of the ceramic stamping mould made of the conventional general technology loses efficacy at present, thereby causing the production efficiency to be lower.
Disclosure of Invention
The invention aims to provide a processing technology of a ceramic tile stamping die, which is not easy to fall off a rubber layer and increases the wear resistance of a die cutting edge.
In order to achieve the purpose, the invention provides a processing technology of a ceramic tile stamping die, which comprises the steps of coating an adhesive on the working surface of the stamping die, and then performing adhesive pressing to enable the working surface of the stamping die to generate an adhesive layer; before the working surface of the stamping die is coated with the adhesive, a groove is arranged on the inner side of the die cutting edge of the stamping die.
Preferably, the method comprises the following steps:
a groove is arranged on the die base body;
surfacing welding is carried out on the groove by adopting a welding rod to generate a surfacing part;
performing heat treatment on the overlaying part;
milling the overlaying part subjected to heat treatment to generate the die cutting edge;
the inner side of the cutting edge of the die is provided with the groove;
and coating an adhesive on the working surface of the stamping die, and then pressing the adhesive to generate the adhesive layer on the working surface of the stamping die.
Preferably, the width of the groove is less than or equal to 1.5mm, and the depth is less than or equal to 1.5 mm.
Preferably, an angle formed by the groove and the upper surface of the die base body is 35-55 degrees.
Preferably, the bevel forms an angle of 45 degrees with the upper surface of the die base.
Preferably, the material of the welding rod is high-chromium wear-resistant alloy steel, and the chromium content of the high-chromium wear-resistant alloy steel is 10-16%.
Preferably, the chromium content of the high-chromium wear-resistant alloy steel is 13%.
Preferably, the heat treatment comprises quenching and low-temperature tempering, wherein the quenching temperature is 850-900 ℃, the cooling mode is water-cooling quenching, and the heat preservation temperature of the low-temperature tempering is 150-.
Preferably, the working surface of the stamping die is subjected to sand blasting before the working surface of the stamping die is uniformly coated with the adhesive.
Preferably, after the working surface of the stamping die is uniformly coated with the adhesive, the adhesive is dried and then pressed
According to the processing technology of the ceramic tile stamping die, the grooves are formed, so that the adhesive layer can be firmly adhered to the working surface of the stamping die, and the adhesive layer is not easy to fall off; through processing treatment on the surfacing part, the cutting edge of the die processed by the surfacing part has the performances of high strength, high hardness, high wear resistance, high toughness and the like; the welding rod is made of high-chromium wear-resistant alloy steel, so that the corrosion resistance of the cutting edge of the die can be improved; the sand blasting treatment can clean the working surface of the stamping die, increase the roughness of the working surface of the stamping die and improve the adhesive force between the adhesive layer and the working surface of the stamping die; the adhesive is dried before the glue pressing, so that the viscosity of the adhesive can be improved, and the glue layer is more firmly attached to the working surface of the stamping die.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a flow chart of the processing steps of the present invention;
FIG. 2 is a schematic view of the mold structure of the present invention;
fig. 3 is an enlarged view of a portion of fig. 2A.
The reference numbers illustrate:
1-a stamping die; 2-cutting edge of the mould; 3-glue layer; 4-groove.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in 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.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
In an embodiment of the present invention, as shown in fig. 1 to 3, in a processing process of a ceramic tile stamping die, an adhesive is applied on a working surface of a stamping die 1, and then a glue pressing process is performed to form a glue layer 3 on the working surface of the stamping die 1; before the working surface of the stamping die 1 is coated with the adhesive, a groove 4 is arranged on the inner side of the die cutting edge 2 of the stamping die 1.
Specifically, the groove 4 is arranged to enable liquid glue to flow into the groove 4 during glue pressing, then the glue is pressed, the groove 4 is filled with glue, and the glue is a part of the glue layer 3, so that the glue layer 3 can be more stably adhered to the working surface of the stamping die 1 after the glue is pressed in the groove 4. The problem that the glue layer 3 is easy to fall off in the use process of the stamping die 1 to cause that the stamping die 1 cannot be used continuously is avoided.
Further, the processing technology of the ceramic tile stamping die comprises the following steps:
s1: a groove is arranged on the die base body;
s2: surfacing welding is carried out on the groove by adopting a welding rod to generate a surfacing part;
s3: performing heat treatment on the overlaying part;
s4: milling the overlaying part after heat treatment to generate the die cutting edge 2;
s5: the groove 4 is arranged on the inner side of the cutting edge 2 of the die;
s6: and (3) coating an adhesive on the working surface of the stamping die 1, and then pressing the adhesive to generate the adhesive layer 3 on the working surface of the stamping die 1.
Specifically, as shown in fig. 1 to 3, a groove is formed around the mold base by machining or the like, and the purpose is to build up welding using a welding rod on the groove to form a built-up portion. The welding rod is overlaid on the groove, and the overlaying is carried out layer by layer in a segmented mode during overlaying, so that stress can be dispersed, the height and the width of the overlaying part are larger than those of the follow-up die cutting edge 2, and the follow-up station is right to mill the overlaying part into the die cutting edge 2. After overlaying, the overlaying part needs to be subjected to heat treatment firstly, so that the mechanical property of the material is improved, the residual stress is eliminated, and the cutting processability of the overlaying part is improved. And (3) milling and sharpening the overlaying part of the heat-treated die by using a numerical control machine tool to form the die cutting edge 2 with proper size, and finishing the die cutting edge 2 by adopting a numerical control coordinate grinding machine, so that the precision of the die cutting edge 2 is improved. The groove 4 is formed in the inner side of the die cutting edge 2, so that a part of liquid glue can be filled into the groove 4 during glue pressing of a subsequent station, and a part of glue of the glue layer 3 is filled into the groove 4 after the glue pressing, so that the adhesive force between the glue layer 3 and the working surface of the stamping die 1 is increased. Before glue pressing, a strong adhesive is uniformly coated on the working surface of the stamping die 1, then a layer of high-elasticity PU glue (namely polyurethane glue) is compounded on the working surface of the stamping die 1, and the glue layer 3 is tightly adhered to the working surface of the stamping die 1 under the action of the strong adhesive.
The surfacing part is processed, so that the cutting edge 2 of the die processed by the surfacing part has the properties of high strength, high wear resistance, high toughness and the like; the groove 4 is arranged to enable the glue layer 3 to be firmly adhered to the working surface of the stamping die 1, so that the glue layer is not easy to fall off, the use times of the stamping die 1 are increased, and the service life of the stamping die is prolonged.
Furthermore, the width of the groove 4 is less than or equal to 1.5mm, and the depth is less than or equal to 1.5 mm. Different stamping die, the thickness of its mould blade is different, and to the mould blade of different thickness, the width and the degree of depth of recess 4 need carry out appropriate modification according to actual conditions.
Further, an angle formed by the groove and the upper surface of the die base body is 35-55 degrees, and more preferably, an angle formed by the groove and the upper surface of the die base body is 45 degrees. The technical scheme does not limit the specific numerical value of the angle, and in practical application, the angle can be other numerical values under the condition of meeting the corresponding technical requirements.
Further, the welding rod is made of high-chromium wear-resistant alloy steel, and the chromium content of the high-chromium wear-resistant alloy steel is 10% -16%.
Further, the chromium content of the high-chromium wear-resistant alloy steel is 13%. Chromium is the main added metal of stainless steel, the surface of chromium is easy to be oxidized to generate a thin layer of dense passive oxide (Cr2O3) protective film which can prevent oxygen from further corroding the metal, and the oxide layer can be rapidly regenerated after being damaged, so that the metal has stronger corrosion resistance, and the cutting edge 2 of the die is smooth and bright and does not stick mud powder. The chromium content of the high-chromium wear-resistant alloy steel determines the corrosion resistance of the cutting edge 2 of the die to a certain extent, and the chromium content is 13% in the embodiment, but the technical scheme does not limit the chromium content, and the chromium content can be changed on the premise of meeting other technical requirements, so that the corrosion resistance of the cutting edge is stronger.
Further, the heat treatment comprises quenching and low-temperature tempering, wherein the quenching temperature is 850-900 ℃, the cooling mode is water-cooling quenching, and the heat preservation temperature of the low-temperature tempering is 150-. After overlaying, the overlaying part needs to be subjected to heat treatment, firstly quenched and then subjected to low-temperature tempering treatment, so that the stress is eliminated, and the die cutting edge 2 machined from the overlaying part has the performances of high strength, high wear resistance, high toughness and the like; after quenching and low-temperature tempering, a tempered martensite metallographic structure with dispersed carbides is formed on the surface of the surfacing part, the hardness can reach more than HRC58, and the cutting edge 2 of a common conventional die is generally HRC 50-53, so that the wear-resisting wear-. Because the metallographic structure after the heat treatment is the medium-carbon high-alloy martensite and is not the brittle high-carbon martensite, the cutting edge 2 of the die has high hardness and high toughness, and the cutting edge 2 of the die is prevented from being easily cracked in the stamping process of the die.
Further, before the working surface of the stamping die 1 is uniformly coated with the adhesive, the working surface of the stamping die 1 is subjected to sand blasting treatment. The sand blasting is to clean and coarsen the working surface of the stamping die 1 by utilizing the impact action of high-speed sand flow, so that the working surface of the stamping die 1 is kept clean, and meanwhile, the roughness of the working surface of the stamping die 1 can be increased, thereby improving the adhesive force between the adhesive layer 3 and the working surface of the stamping die 1.
Further, after the working surface of the stamping die 1 is uniformly coated with the adhesive, the adhesive is dried and then pressed. Because the adhesive contains certain moisture, after the adhesive is uniformly coated, the adhesive is dried to reduce the moisture in the adhesive and improve the viscosity of the adhesive, so that the adhesive layer 3 can be better adhered to the working surface of the stamping die 1.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (9)

1. A processing technology of a ceramic tile stamping die is characterized in that an adhesive is smeared on the working surface of the stamping die, and then glue pressing is carried out, so that a glue layer is generated on the working surface of the stamping die, and the processing technology is characterized in that: before the working surface of the stamping die is coated with the adhesive, a groove is arranged on the inner side of a die cutting edge of the stamping die;
the method comprises the following steps:
a groove is arranged on the die base body;
surfacing welding is carried out on the groove by adopting a welding rod to generate a surfacing part;
performing heat treatment on the overlaying part;
milling the overlaying part subjected to heat treatment to generate the die cutting edge;
the inner side of the cutting edge of the die is provided with the groove;
and coating an adhesive on the working surface of the stamping die, and then pressing the adhesive to generate the adhesive layer on the working surface of the stamping die.
2. The process of claim 1, wherein: the width of the groove is less than or equal to 1.5mm, and the depth is less than or equal to 1.5 mm.
3. The process for manufacturing a ceramic tile stamping die as claimed in claim 1, wherein: the included angle between the groove and the upper surface of the die base body is 35-55 degrees.
4. The process for manufacturing a ceramic tile stamping die as claimed in claim 3, wherein: the bevel forms an angle of 45 degrees with the upper surface of the die base.
5. The process for manufacturing a ceramic tile stamping die as claimed in claim 1, wherein: the welding rod is made of high-chromium wear-resistant alloy steel, and the chromium content of the high-chromium wear-resistant alloy steel is 10-16%.
6. The process for manufacturing a ceramic tile stamping die as claimed in claim 5, wherein: the chromium content of the high-chromium wear-resistant alloy steel is 13%.
7. The process for manufacturing a ceramic tile stamping die as claimed in claim 1, wherein: the heat treatment comprises quenching and low-temperature tempering, wherein the quenching temperature is 850-900 ℃, the cooling mode is water-cooling quenching, and the heat preservation temperature of the low-temperature tempering is 150-170 ℃.
8. The process for manufacturing a ceramic tile stamping die as claimed in claim 1, wherein: and before the working surface of the stamping die is uniformly coated with the adhesive, carrying out sand blasting treatment on the working surface of the stamping die.
9. The process for manufacturing a ceramic tile stamping die as claimed in claim 1, wherein: and after uniformly coating the adhesive on the working surface of the stamping die, drying the adhesive, and then pressing the adhesive.
CN201911052597.3A 2019-10-31 2019-10-31 Processing technology of ceramic tile stamping die Active CN110815504B (en)

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CN110815504B true CN110815504B (en) 2022-01-14

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CN114453504B (en) * 2022-04-13 2022-07-12 保定市精工汽车模具技术有限公司 Preparation method of cutting edge of stamping die
CN115889973B (en) * 2022-12-26 2024-02-20 广东省科学院智能制造研究所 Manufacturing method for ceramic mold core laser material increasing and decreasing

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