阅读说明：本技术 一种古筝面板表面研磨方法 (Method for grinding surface of Chinese zither panel ) 是由 邹飞 于 2019-10-16 设计创作，主要内容包括：本发明属于古筝面板加工技术领域,公开了一种古筝面板表面研磨方法,包括以下加工步骤：S1、取初步处理完成的桐木面板进行粗磨,并保证打磨后的桐木面板厚度与预定要求厚度相同；S2、精磨步骤S1所形成的桐木面板,使得精磨后的桐木面板厚度下降2-5mm；S3、在打磨完成后在桐木面板表面灼烧形成3-5mm的碳化层,具体的采用采用煤油喷灯进行高火碳化；S4、打磨碳化层,使得碳化层厚度降至1-3mm,具体的采用铜丝刷进行反复刷除打磨,本发明中精准控制各个步骤的加工厚度,从而使最终成型的古筝面板厚度有效满足精确加工的需求；其中,各个步骤厚度的控制均采用过厚、精修的方式达到精准控制的效果,以此降低加工厚度控制的难度。(The invention belongs to the technical field of processing of koto panels, and discloses a surface grinding method for a koto panel, which comprises the following processing steps: s1, roughly grinding the tung wood panel which is subjected to the primary treatment, and ensuring that the thickness of the tung wood panel which is ground is the same as the preset required thickness; s2, finely grinding the tung wood panel formed in the step S1 to reduce the thickness of the finely ground tung wood panel by 2-5 mm; s3, burning the surface of the panel of the tung wood to form a carbonized layer with the thickness of 3-5mm after polishing, and specifically carrying out high-fire carbonization by adopting a kerosene burner; s4, polishing the carbonized layer to reduce the thickness of the carbonized layer to 1-3mm, specifically, repeatedly brushing and polishing by using a copper wire brush, wherein the processing thickness of each step is accurately controlled in the invention, so that the thickness of the finally formed Chinese zither panel effectively meets the requirement of accurate processing; wherein, the control of each step thickness all adopts the mode of too thick, truing to reach the effect of accurate control to this degree of difficulty that reduces processing thickness control.)

1. A surface grinding method for a Chinese zither panel is characterized by comprising the following processing steps:

s1, roughly grinding the tung wood panel which is subjected to the primary treatment, and ensuring that the thickness of the tung wood panel which is ground is the same as the preset required thickness;

s2, finely grinding the tung wood panel formed in the step S1 to reduce the thickness of the finely ground tung wood panel by 2-5 mm;

s3, burning the surface of the tung wood panel to form a carbonized layer with the thickness of 3-5mm after polishing;

s4, polishing the carbonized layer to reduce the thickness of the carbonized layer to 1-3 mm;

s5, coating a protective layer with the thickness of 8-10mm on the surface of the carbonized layer formed in the step S3, and drying;

s6, roughly grinding the protective layer formed in the step S4 to reduce the thickness of the protective layer to 5-7 mm;

s7, fine grinding the protective layer formed in step S5 to reduce the thickness of the protective layer to 2-4mm, and obtaining the desired koto panel.

2. The method of claim 1, wherein the method further comprises: the preliminary treatment in step S1 includes soaking of tung wood panels to remove dregs, high-temperature cooking and drying.

3. The method of claim 1, wherein the method further comprises: the burning carbonization in step S3 is performed by high-temperature carbonization using a kerosene burner.

4. The method of claim 1, wherein the method further comprises: the polishing operation in step S4 is repeated brushing and polishing with a copper wire brush.

5. The method of claim 1, wherein the method further comprises: the raw materials of the protective layer in the step S5 are formed by mixing shellac, animal glue, graphene nanoparticles, tung tree wood powder and ethanol solution, and the mixing ratio of the raw materials is 1:4:2:1: 2.

6. The method of claim 5, wherein the method further comprises: the animal glue is one of gelatin, oxhide gelatin and tortoise-plastron glue.

7. The method of claim 5, wherein the method further comprises: the grinding operations in step S1, step S2, step S6 and step S7 are all performed by using sandpaper or a sand tray, wherein the specification of the sandpaper or the sand tray used in each step is selected according to the actual processing requirement.

Technical Field

The invention belongs to the technical field of processing of koto panels, and particularly relates to a surface grinding method for a koto panel.

Background

The panel of the Chinese zither is one of important factors for determining the tone quality of the Chinese zither, and as for the sounding principle of the Chinese zither, the conduction effect of the panel has a direct causal relationship with the vibration state of a Chinese zither body, so that the quality of the acoustic quality of the Chinese zither is also determined; specifically, taking the thickness of the koto panel as an example: the molded thickness is different, and the formed tone is different, so that the Chinese zither panel can be polished to a certain degree in the processing process, the thickness of the final molded panel is more reasonable, and the quality of the Chinese zither is ensured;

to above-mentioned phenomenon, in current zither panel processing, adopt thickness proportion form thicker in the middle of most, both ends are thinner, though can effectively satisfy the tone quality demand, nevertheless very easily appear the not enough phenomenon of panel surface strength under the uneven prerequisite of panel thickness, especially to the face of the position department that the thickness is thinner, under the condition of collision or temperature variation, there is again because of expend with heat and contract with cold and appear the problem of deformation or fracture, influence the quality and the life of whole zither panel.

In addition, according to the actual use requirement of the zither, the surface formed by the polished surface of the zither panel is not as smooth as possible, for example: when the musical instrument is vigorously played, the Chinese zither codes close to the panel can move along with the amplitude direction of the strings, and if the surface of the panel is too flat and smooth, the problems of Chinese zither code movement, jumping and the like are easily caused, so that the playing process and the tone color formed by playing are seriously influenced.

Disclosure of Invention

The invention aims to provide a surface grinding method for a Chinese zither panel, which aims to solve the problems in the background art, so that the high-quality Chinese zither panel with high surface strength, reasonable thickness and reasonable surface roughness is obtained.

In order to achieve the purpose, the invention provides the following technical scheme: a surface grinding method for a Chinese zither panel comprises the following processing steps:

s1, roughly grinding the tung wood panel which is subjected to the primary treatment, and ensuring that the thickness of the tung wood panel which is ground is the same as the preset required thickness;

s2, finely grinding the tung wood panel formed in the step S1 to reduce the thickness of the finely ground tung wood panel by 2-5 mm;

s3, burning the surface of the panel of the tung wood to form a carbonized layer with the thickness of 3-5mm after polishing, wherein the specific carbonization mode is high-fire carbonization by adopting a kerosene blowtorch;

s4, polishing the carbonized layer to reduce the thickness of the carbonized layer to 1-3mm, and specifically, repeatedly brushing and polishing by using a copper wire brush;

s5, coating a protective layer with the thickness of 8-10mm on the surface of the carbonized layer formed in the step S3, and drying;

s6, roughly grinding the protective layer formed in the step S4 to reduce the thickness of the protective layer to 5-7 mm;

s7, fine grinding the protective layer formed in step S5 to reduce the thickness of the protective layer to 2-4mm, and obtaining the desired koto panel.

Preferably, the polishing operations in step S1, step S2, step S6 and step S7 are performed by using sandpaper or a sand table.

Preferably, the primary treatment comprises soaking and deslagging of the tung wood panel, high-temperature stewing and drying.

Preferably, the raw materials of the protective layer are formed by mixing shellac, animal glue, graphene nanoparticles, tung tree wood powder and ethanol solution, and the mixing ratio of the raw materials is 1:4:2:1: 2; wherein the animal glue is selected from gelatin, oxhide gelatin, and colla Plastri Testudinis.

Compared with the prior art, the invention has the following beneficial effects:

(1) the processing thickness of each step is accurately controlled, so that the thickness of the finally formed Chinese zither panel effectively meets the requirement of accurate processing; wherein, the control of each step thickness all adopts the mode of too thick, truing to reach the effect of accurate control to this degree of difficulty that reduces processing thickness control.

(2) Deep carbonization is carried out on the Chinese zither panel by combining a surface baking process, so that the surface strength of the Chinese zither panel is improved, and the effect of preventing and treating the deformation of the panel is achieved; in addition, the protective layer containing the graphene nano particles and the tung wood powder is combined, so that the surface rigidity and toughness of the koto panel are further improved, and the possibility of cracking of the panel is low.

(3) The wear-resistant layer degree and the roughness of inoxidizing coating can also effectively be improved through graphite alkene nano-particle and tung wood powder addition to combine the coarse grinding and the accurate grinding to carry out protective layer thickness and roughness's further adjustment, thereby make the roughness on final fashioned zither panel surface effectively satisfy the processing demand.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, 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.

The invention provides a method for grinding the surface of a Chinese zither panel, which comprises the following processing steps:

s1, roughly grinding the tung wood panel which is subjected to the primary treatment, and ensuring that the thickness of the tung wood panel which is ground is the same as the preset required thickness;

specifically, the method comprises the following steps: the primary treatment comprises soaking the wood panel for removing slag, steaming at high temperature and drying;

s2, finely grinding the tung wood panel formed in the step S1 to reduce the thickness of the finely ground tung wood panel by 2-5 mm;

s3, burning the surface of the tung wood panel to form a carbonized layer with the thickness of 3-5mm after polishing;

specifically, the method comprises the following steps: the burning carbonization mode is to adopt a kerosene blowtorch to carry out high-fire carbonization;

s4, polishing the carbonized layer to reduce the thickness of the carbonized layer to 1-3 mm;

specifically, the method comprises the following steps: the polishing operation adopts a copper wire brush to repeatedly brush and remove the polishing, and the floating ash on the surface of the carbonized layer is brushed away in the process, so that the aim of adjusting the thickness of the carbonized layer is fulfilled, the texture of the tung wood panel is partially shown, and the effect of improving the surface aesthetic property of the panel is achieved;

s5, coating a protective layer with the thickness of 8-10mm on the surface of the carbonized layer formed in the step S3, and drying;

specifically, the method comprises the following steps: the protective layer is prepared by mixing shellac, animal glue, graphene nanoparticles, tung tree wood powder and ethanol solution according to the mixing ratio of 1:4:2:1: 2; the animal glue is one of gelatin, oxhide gelatin and tortoise-plastron glue;

taking 100g of mixed protective layer raw materials as an example, the materials are mixed according to the proportion: the preparation method comprises the following steps of selecting 10g of shellac, 40g of animal glue, 20g of graphene nanoparticles and 10g of tung wood powder, and uniformly mixing the selected ingredients in 20g of ethanol solution;

in the subsequent drying process, the ethanol solution gradually volatilizes to enable the protective layer to be gradually compact, and the graphene nano particles and the tung tree wood powder gradually protrude to the surface of the protective layer, so that a rough surface structure is formed;

s6, roughly grinding the protective layer formed in the step S4 to reduce the thickness of the protective layer to 5-7 mm;

specifically, the method comprises the following steps: the purpose of adjusting the thickness of the protective layer is realized through the step;

s7, fine grinding the protective layer formed in the step S5 to reduce the thickness of the protective layer to 2-4mm, and manufacturing the required Chinese zither panel;

specifically, the method comprises the following steps: the surface roughness of the protection surface is adjusted through the steps, so that the surface of the finally formed Chinese zither panel can meet the processing requirement.

Preferably, the polishing operations in step S1, step S2, step S6 and step S7 are performed by using sandpaper or a sand tray, wherein the specification of the sandpaper or the sand tray used in each step is selected according to the actual processing requirement.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.