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Grinding and polishing method of metal strip

A technology for metal strips and abrasive brushes, which is applied to polishing compositions containing abrasives, grinding devices, grinding machine tools, etc., and can solve problems such as large specificity of imported brush rollers and overcapacity

Inactive Publication Date: 2014-01-08
杭州百木表面技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In the current situation of overall overcapacity and declining processing costs, the high price of imported brush rollers accounts for an increasing proportion of production and processing costs. Contradictions of cost distress, we must adopt a method that can not only meet the quality requirements but also save costs

Method used

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  • Grinding and polishing method of metal strip
  • Grinding and polishing method of metal strip
  • Grinding and polishing method of metal strip

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Copper strip: C10200, 0.5mm thick; coil weight: 4 tons

[0026] Experimental method: online grinding

[0027] Grinding brush: ordinary canvas brush is used in the invention example (the canvas has a rectangular structure, and its overlapping is set on the surface of the Bakelite cylinder)

[0028] Grinding effect evaluation symbols: ◎-good ○-good ▲-poor

[0029] Table 1

[0030]

[0031] Table 1 shows that: using the abrasive fluid of Example 1 to grind and polish a copper strip with a thickness of 0.5 mm, the same effect as that of the abrasive brush in the comparative example is obtained, but the cost is reduced by 30%.

[0032] The grinding brush in this embodiment 1 can adopt non-woven fabric, fleece, nylon, damping cloth or neoprene cloth, also can reach the technical effect identical with embodiment 1 at last.

Embodiment 2

[0034] Copper strip: tin phosphor bronze strip C5191, 0.2mm thick; coil weight: 4 tons

[0035] Experimental method: online grinding

[0036] Abrasive brush: In the example of the invention, ordinary non-woven brushes are used (ordinary non-woven fabrics have a ring structure, and their sockets are set on the surface of the bakelite cylinder)

[0037] Grinding effect evaluation symbols: ◎-good ○-good ▲-poor

[0038] Table 2

[0039]

[0040] Table 2 shows that: using the abrasive fluid of Example 2 to grind and polish the tin phosphor bronze strip with a thickness of 0.2 mm, the same effect as that of the abrasive brush in the comparative example is obtained, but the cost is reduced by 40%.

[0041] In the above formula, the diamond powder is replaced by a mixture of one or more of silicon dioxide, aluminum oxide, cerium oxide, silicon carbide and cubic boron nitride, and the particle size of the diamond powder is 0.5 μm, 1 μm, 3 μm, 6 μm, 20 μm or 40 μm, can also achiev...

Embodiment 3

[0044] Copper strip: zinc white copper C7025, 0.16mm thick; coil weight: 4 tons

[0045] Experimental method: online grinding

[0046] Grinding brush: ordinary nylon brush is used in the invention example

[0047] Grinding effect evaluation symbols: ◎-good ○-good ▲-poor

[0048] table 3

[0049]

[0050] Table 3 shows that using the abrasive fluid of Example 3 to grind and polish the zinc-nickel-nickel copper strip with a thickness of 0.2 mm, the same effect as that of the abrasive brush in the comparative example is obtained, but the cost is reduced by more than 30%.

[0051] Sodium sulfonate adopts sodium phosphate, sodium tripolyphosphate, sodium hexametaphosphate, sodium acrylate or other low-foaming dispersion emulsifiers in this embodiment, also can reach the technical effect identical with embodiment 3.

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Abstract

The invention discloses a grinding and polishing method of a metal strip, and belongs to the technical field of metal surface polishing. The method comprises the following steps that the metal strip is grinded through a high-speed-rotating grinding brush in a grinding region and grinding fluid is sprayed on the metal strip at the same time, wherein the grinding fluid comprises grinding materials, a surface active agent and water, the weight of grinding materials account for 0.5-15% of that of the water, and the weight of the surface active agent accounts for 0.25-3% of that of the water, and the grinding brush is composed of a bakelite barrel and grinding fabrics fixed to the outer side the bakelite barrel. The grinding and polishing method of the metal strip is reasonable in design, the grinding materials are evenly scattered in the water through the surface active agent, serve as the grinding fluid and replace clear water to be sprayed, the grinding brush is made from non-woven fabrics free of grinding materials or canvases free of grinding materials or other fiber capable of being used for grinding and polishing, and accordingly polishing effect is guaranteed, and the production cost is greatly reduced by over 30% at least.

Description

technical field [0001] The invention belongs to the technical field of metal surface polishing, and in particular relates to a grinding and polishing method for a metal strip. Background technique [0002] In recent years, various electronic components mainly based on semiconductors have developed rapidly, and the demand for copper alloy strips for electronic components has also continued to increase. These copper alloy strips are used for switches, plug-ins, semiconductor lead frames, etc., requiring Good surface quality. [0003] Controlling the surface quality of copper and copper alloy strips involves many aspects of processing. The processing technology of copper alloy strips generally includes: billet → rough rolling → milling → homogenization annealing → finish rolling → cleaning → finish rolling → annealing → Cleaning passivation → curling → packaging. Due to the complicated process, many defects such as peeling, color difference, burrs, high roughness, oxidation, ...

Claims

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Application Information

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IPC IPC(8): B24B37/10C09G1/02
CPCB24B37/10B24B37/20B24B37/24C09G1/02
Inventor 白瑞峰
Owner 杭州百木表面技术有限公司
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