DYW420 Screen Buffing Polisher

Brief Introduction

The Screen Buffing system distinguishes itself from others. It's particularly effective for buffing smartphone screens and back plates, as well as removing scratches. Though it employs the same abrasives and slurry as flat polishing, its unique feature lies in the distinct plate patterns bristling with many hair-like abrasives. This series shines when it comes to polishing curved surfaces. To achieve the desired arch accuracy, such as roundness, the workpiece must adhere to specified tolerance levels before the process begins.

Specifications

Key Facts

Sampling

Quick Loading & Unloading
Curved Edge Polishing ◉
Dual Polishing Sectors (DYW42010)
Water Proof by UV Glue ◉
Polishing Slurry Auto Supply System
Brush Buffing Polishing ◉

Engineering Intent

With the widespread adoption of curved edge designs for screens and frames in modern smart devices, we have adjusted our processing formula and updated our polishing pads to buffing brush forms to accommodate this change. This allows the buffing brush to specifically target and finely polish half-circular and quarter-circular arcs. Utilizing the brush's forward and reverse functions, in conjunction with our processing formula, effectively reduces the occurrence of orange peel effects, ensuring a high-quality polishing result.

System Model	DYW4201	DYW42010
Buffing Brush Diameter (mm)	∅ 420	∅ 420
Number of Buffing Brush	1	4
Worktable Diameter (mm)	∅ 550	∅ 418
Number of Worktable	1	10
Turntable Diameter (mm)	-	∅ 1150
Load Capacity *iPhone 13 Pro Max	8	50
Brush Rotation Rate (rpm) *ccw & cw	5 - 250	5 - 250
Worktable Rotation Rate (rpm) *ccw & cw	5 - 120	5 - 120
Turntable Rotation Rate (rpm)	-	0 - 20
Y-axis Stroke (mm)	-	1260
Z-axis Stroke (mm)	205	240
Total Power (kW)	5.2	21
Weight (kgf)	450	2700
Dimension (L×W×H) (mm)	700 × 960 × 1820	2520 × 1960 × 2230

1. How It Works

The buffing polisher doesn't rely on applying pressure to achieve a polished finish. Instead, it uses high-speed rotation to swiftly glide over the surface of the workpiece. When in use, the brush spins towards worktable, perfectly molding to and covering the curves of workpieces. During the process, the polishing liquid is pre-fed through the brush to the polishing area. Then, both the brush and the worktable undergo simultaneous forward and reverse, as well as concurrent rotational movements. This approach enhances the efficiency of the polishing process and reduces the occurrence of orange peel texture.

Quarter-Circle Buffing Diagram

Half-Circle Buffing Diagram

2. Clamping

The method of clamping the workpiece is primarily determined by the workpiece's characteristics. For polishing bare screens, vacuum is generally used, while for repairing entire smartphones, the phone is placed in an independent fixture and sealed with blue UV glue before being placed on the worktable. At the same time, the angle of the product's curved edge also determines the clamping method: if it's a quarter-circle arc (commonly known as 2.5D), the product is placed flat on the worktable. If it's a half-circular arc (known as 3D), the product needs to be positioned on its side so the brush can fully cover the arc edge. Typically, half-circular arc products require four processes to polish all four sides.

Dyan Precision Technology situated in the innovative city Shenzhen, occupies a production plant area of approximately 13,000 square meters and specializes in the field of grinding, lapping and polishing technology. With a focus on research and development, production, and sales, the company offers a diverse range of high-precision equipment such as flat lapping and polishing equipment, wafer grinder, wax bonder, screen polisher, and associated consumables. These products find extensive application in the precise processing of mechanical seals, semiconductor fabrication, smart phone, optics, aerospace, aviation, automotive, LED technology, metrology, solar enegery, nuclear energy, jewellary, and various other industries.

*Reminder: we only offer once free and limited sampling. The expenses of delivery and prourement of the sample entity are to be covered by the sender.

Sampling

Find various sampling examples we have made in the past.

Find Solutions

Discover the most suitable equipment for your needs.

FAQs

View commonly asked questions from individuals.

Process	Industry	Product
Buffing Polishing	Electronics	Smart Phone Screen	Smart Phone Middle Frame	Smart Phone Back Plate	Smart Watch Screen
	Electronics	Smart Watch Middle Frame

Sample Application	Major Material	Applied Machining	Edge Circle (Quarter/Half)	Roughness (Sa/nm)	Orange Peel Effect	Defect Dia. (μm)
Back Plate	Aluminum Alloy	Buffing	Half Circle	14.915	1%	≤ 0.1
Back Plate	Zirconia	Buffing Polishing	Half Circle	11.876	1%	≤ 0.1
Back Plate	Zirconia	Buffing	Quarter Circle	18.266	2%	≤ 0.1
Touch Screen Assembly	GFF Glass	Buffing	Quarter Circle	15.134	0.5%	≤ 0.1
Outter Screen	GFF Glass	Buffing Polishing	Quarter Circle	17.485	0.5%	≤ 0.1
Outter Screen	PMMA	Buffing	Quarter Circle	12.279	Not Allowed	≤ 0.1
Smart Phone Middle Frame	Aluminum Alloy	Lapping Buffing Polishing	Quarter Circle *corner	42.610	Not Specified	Not Specified
Smart Watch Middle Frame	Aluminum Alloy	Corase Buffing	Half Circle	251.651	Not Specified	Not Specified

Accessible Roughness (LCD)	Ra. 0.01 μm
Processable Contour	Quarter & Half Circle
Orange Peel Effect	Total 2%

Brief Introduction

Quick Loading Chucks

Blue UV Adhesive

Buffing Brush

Engineering Intent

1. How It Works

2. Clamping

Sampling

Find Solutions

FAQs

DYS Substrate Flat Lapping Machine

DYG1000 Semi Automatic Wafer Grinder

DYG2000 Full Automatic Wafer Grinder

DYG3000 Full Automatic Wafer Grinder

DYC2000 Full Automatic Edge Grinder

Quick Loading
Chucks

Blue UV
Adhesive

Buffing
Brush