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Welcome
We are a leading Chinese manufacturer of abrasives.
Remember us
BY ACCESSING THIS WEBSITE, YOU ACCEPT OUR
privacy policy
Diamond grinding pads are precision grinding tools made using diamond micro powder as the abrasive.
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Structure and manufacturing
Structural composition: usually consists of a working layer, substrate, and other parts. The working layer is the part containing silicon carbide abrasive, which directly contacts the material being processed and determines the grinding performance of the grinding disc; the substrate supports the working layer. Common substrate materials include metal, resin, and ceramics. Different substrate materials give the grinding disc different physical and chemical properties.
Manufacturing Process
Coating Method: Silicon carbide micropowder is uniformly mixed with a high-performance adhesive, then applied to the surface of high-strength polyester film or other substrate materials using ultra-precision coating technology. The material is then dried and cured to form the grinding disc. This method allows precise control over the thickness of the grinding layer and the distribution of abrasive particles, making it suitable for producing high-precision grinding discs.
Sintering Method: Silicon carbide powder is mixed with an appropriate amount of binder, molded into shape, and then sintered at high temperatures to form a strong bond between silicon carbide particles and between particles and the binder, resulting in grinding discs with specific shapes and strength. Grinding discs produced by the sintering method have high hardness and wear resistance but involve a relatively complex process and higher costs.
Diamond grinding pads are precision grinding tools made using diamond micro powder as the abrasive. The following sections will introduce their characteristics, classifications, and applications:
Preparation Process
Mixing: Mix diamond micro powder with binder, dispersant, and auxiliary abrasives in specific proportions to form a mixture with good flowability and plasticity.
Forming: Fill the mixture into a mold and use methods such as pressing, casting, or coating to form the desired shape and size, such as sheet-like or block-like forms.
Curing: The formed grinding pads are subjected to curing treatment to induce cross-linking reactions in the binder, firmly bonding the diamond micro powder particles together to form grinding pads with specific strength and hardness. Curing methods may include thermal curing, UV curing, or chemical curing.
Post-processing: The cured grinding pads undergo post-processing steps such as cutting, grinding, and finishing to meet different usage requirements, such as adjusting dimensional accuracy and surface flatness.
Application Areas
Semiconductor Manufacturing: Used for thinning, grinding, and polishing semiconductor materials such as silicon wafers and silicon carbide wafers to meet the stringent requirements of chip manufacturing for wafer flatness, thickness uniformity, and surface roughness, thereby enhancing chip performance and reliability.
Optical Component Processing: Precisely grinding various optical glass and crystal materials such as lenses, prisms, window plates, and filters to achieve the required optical precision and surface quality, ensuring the imaging quality and optical performance of optical components.
Sapphire Processing: Plays a crucial role in the grinding and thinning of sapphire products such as LED substrates, consumer electronics covers, and watch crystals, effectively improving the surface smoothness and flatness of sapphire, thereby enhancing product aesthetics and durability.
Precision Ceramic Processing: Suitable for surface treatment of hard and brittle ceramic materials such as electronic ceramics and structural ceramics, including alumina ceramics, alumina nitride ceramics, and silicon nitride ceramics. This process improves the surface quality of ceramic products while enhancing their mechanical and electrical properties.
Characteristics
High hardness and wear resistance: Diamond is the hardest substance in nature, giving the grinding pad exceptional wear resistance. It can maintain grinding capability for extended periods, reducing replacement frequency and lowering costs.
High-efficiency grinding: They can quickly remove excess material from the surface, significantly improving grinding efficiency and reducing processing time, particularly suitable for processing hard and brittle materials.
High-precision processing: They can achieve ultra-high flatness grinding at the micron or even nanometer level, meeting the stringent precision requirements for products such as optical components and semiconductor wafers.
Excellent stability: During grinding, the diamond grinding pad maintains a stable material removal rate, ensuring high consistency in processing results between batches and enhancing product quality stability.
High adaptability: It can be customized to suit various application scenarios by adjusting the particle size, concentration, and type of binder of diamond micro powder according to different processing materials and process requirements.
Classification
By bonding agent type: Diamond grinding pads can be classified into ceramic-bonded diamond grinding pads, resin-bonded diamond grinding pads, and metal-bonded diamond grinding pads. Ceramic-bonded grinding pads have high hardness and wear resistance, suitable for coarse grinding and semi-finishing; resin-bonded grinding pads offer good flexibility and high grinding precision, commonly used for finishing and polishing; metal-bonded grinding pads have high bonding strength and long service life, suitable for processing high-hardness materials.
• By grinding material: There are silicon carbide-specific grinding pads, sapphire-specific grinding pads, ceramic-specific grinding pads, microcrystalline glass-specific grinding pads, etc. Each type of grinding pad is designed to match the specific characteristics of the material to achieve optimal grinding results.
• By abrasive distribution pattern: These can be divided into gradient distribution grinding pads and uniform distribution grinding pads. Gradient distribution grinding pads have abrasive concentration that varies in a gradient from the surface to the interior, providing appropriate grinding force at different grinding stages; uniform distribution grinding pads have uniformly distributed abrasives, resulting in more consistent grinding performance.
