Anodic oxidation device and piston anodic oxidation processing process

An anodizing and processing technology, applied in anodizing, electrolytic coatings, surface reaction electrolytic coatings, etc., can solve the problems of inability to quickly dissipate heat, affect product quality, and long oxidation time, prevent overburning, improve Oxidation efficiency, the effect of improving product quality

Pending Publication Date: 2017-11-03
CHONGQING XIECHENG AUTO PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One of the existing problems is that a large amount of heat will be generated during anodic oxidation, and the piston is soaked in the electrolyte, which cannot dissipate heat quickly, and it is prone to overheating, which affects product quality; the second existing problem is that only small Anodizing with current, when the current is too large, it is easy to produce arc phenomenon, affecting product quality, long oxidation time and low work efficiency

Method used

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  • Anodic oxidation device and piston anodic oxidation processing process
  • Anodic oxidation device and piston anodic oxidation processing process
  • Anodic oxidation device and piston anodic oxidation processing process

Examples

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Embodiment 1

[0034] Example 1, see Figure 1-4 , an anodizing device provided in this embodiment includes a power supply, an electrolyte storage chamber, an anode assembly, a cathode plate 1, an oxidation tank 2, and a power pump; the anode assembly can be detachably connected to the parts to be treated; the cathode The plate 1 is at least partially suitable for immersion in the oxidation tank 2; a return channel 3 is formed between the anode assembly and the cathode plate 1; the return channel 3 communicates with the oxidation tank 2; the bottom of the cathode plate 1 is provided with A spray assembly communicating with the return channel 3; the spray assembly is connected to the electrolyte storage chamber through a power pump; the power supply is electrically connected to the anode assembly and the cathode plate 1 respectively. When in use, put the bottom surface of the piston to be oxidized back into the water channel 3, and make the bottom surface of the plug to be oxidized directly a...

Embodiment 2

[0042] Embodiment 2, a piston anodizing process, using the above-mentioned anodizing device, includes the following steps:

[0043] A Put the piston into the workpiece holding hole so that the bottom surface to be oxidized faces down;

[0044] B starts the cylinder so that the conductive plate is in contact with the piston;

[0045] C Start the power supply and power pump, the electrolyte is sprayed out in the vertical direction through the water storage lotus, and contacts the bottom surface of the piston to be oxidized to form a current loop, and the current density is adjusted by the current controller to complete the anodic oxidation process.

[0046] As a further improvement to the above technical solution, in step C, the flow rate of the power pump is 50-150 L / min, and the head is 5-20m.

[0047] As a further improvement to the above technical solution, in step C, the current density is 40-80A / dm².

Embodiment 3

[0048] Embodiment 3, a piston anodizing process, using the above-mentioned anodizing device, includes the following steps:

[0049] A Put the piston into the workpiece holding hole so that the bottom surface to be oxidized faces down;

[0050] B starts the cylinder so that the conductive plate is in contact with the piston;

[0051] C Start the power supply and power pump, the electrolyte is sprayed out in the vertical direction through the water storage lotus, and contacts the bottom surface of the piston to be oxidized to form a current loop, and the current density is adjusted by the current controller to complete the anodic oxidation process. The flow rate of the power pump is 50L / min, and the head is 5m. The current density is 40A / dm².

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Abstract

The invention belongs to the technical field of alloy surface anodic oxidation hard treatment and provides an anodic oxidation device and a piston anodic oxidation processing process. The anodic oxidation device comprises a power source, an electrolyte storage cavity, an anode component, an anode plate, an oxidation tank, a power pump and a current controller. The piston anodic oxidation processing process which adopts the anodic oxidation device includes steps: A, mounting a piston into a workpiece clamping hole to make a to-be-oxidized bottom surface downward; B, starting an air cylinder to make a conducting plate abutted against the piston; C, starting the power source and the power pump, enabling electrolyte to be sprayed out vertically through a water storage sprayer nozzle to contact with the to-be-oxidized bottom surface of the piston to form a current circuit, and adjusting current density through the current controller to finish anodic oxidation processing. The anodic oxidation device has advantages that quick heat radiation is realized to prevent overburning, and accordingly product quality can be improved.

Description

technical field [0001] The invention relates to the technical field of anodic oxidation hard treatment on alloy surfaces, in particular to an anodic oxidation device and a piston anodic oxidation process. Background technique [0002] With the development of engine technology, the requirements for the piston are getting higher and higher, especially the top of the piston. As a part of the combustion chamber, the top of the piston has to withstand high temperature and high pressure. From the perspective of faulty parts, many piston tops are cracked, which seriously affects engine performance. For this reason, modern engines must enhance the strength of piston tops, otherwise the piston life will be very low. [0003] At present, the most effective way to strengthen the top of the piston in the field of pistons is to anodize the top of the piston. Now the piston industry, whether it is the industry leader MAHLE (MAHLE), Kolbenschmidt (KS) company, or domestic piston manufactu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/02
CPCC25D11/005C25D11/02
Inventor 卢维强卢泽仁
Owner CHONGQING XIECHENG AUTO PARTS
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