How to make diamond segments?

Production Principle: Systematized Implementation of Precision Cold Pressing

The production process of this equipment revolves around precision control and multi-process coordination, supported by ten core patented technologies. The specific process is as follows:

Layered Powder Distribution: Using a layered stacking and pressing method combined with an external precision metering system, the equipment evenly spreads metal matrix powder into the mold cavity. The volumetric cup weighing method ensures that the weight of each powder layer is precisely controlled, with errors in density and thickness for each layer kept within the micron range. The cavity-separated powder feeding technology uses partitions to separate different powders, ensuring distinct, non-penetrating layers within the segment.

Ordered Diamond Placement: As the core step, the system employs pinhole adsorption placement technology. Using a customized pin plate, diamond particles are precisely positioned at predetermined coordinates within the matrix powder according to a design model. The pin plate can be designed and customized based on the segment shape and diamond concentration, with adjacent pin plates utilizing a staggered design. For multi-layer segments, the equipment can repeat the powder distribution and diamond placement steps to form a multi-layer ordered arrangement.

Cold Pressing: Under vacuum conditions, the equipment applies precisely controlled pressure to form the matrix powder and orderly arranged diamond particles into a green compact in a single cold pressing step. The positioning error between the mold and each station is less than 0.01 mm, ensuring forming accuracy. As no heating is required throughout the process, it avoids potential high-temperature impacts on diamond strength and matrix composition, while also reducing process energy consumption.

In-Line Inspection: The formed green compacts can be equipped with an industrial vision inspection system. Built-in cameras and light sources monitor the diamond placement rate for each layer in real time. Data can be displayed, stored, and traced in real time, ensuring product consistency and quality.

Multi-Station Rotary Disc Cold Press (Array Type): Utilizing a moving-mold-cavity method, the mold cavity undergoes continuous cycles to complete processes such as powder filling, diamond placement, pre-pressing, and final pressing. Producing a five-layer segment takes only 11 seconds, enabling an output of 320 five-layer segments per hour.

Core Advantages: Systematic Enhancement of Performance and Efficiency

Compared to traditional random distribution processes and conventional cold pressing equipment, the ordered diamond segment cold press demonstrates technical advantages across multiple dimensions:

1. Optimized Cutting Performance
The orderly arrangement of diamond particles ensures that each particle experiences uniform force during cutting, allowing them to participate in the cutting process simultaneously. Tools manufactured with ordered segments show significant improvements in cutting efficiency and service life. The flatness of the cut surface is improved, and defects such as chipping and scratching during processing are effectively reduced.

2. Improved Material Utilization
By precisely controlling the spacing and number of diamond layers, particle overlap and void areas are eliminated, significantly enhancing the utilization rate of diamond material. With a diamond placement rate exceeding 98%, diamond consumption can be reduced under equivalent performance requirements, directly lowering manufacturing costs.

3. Enhanced Product Consistency
The automated, digitalized production process eliminates human operational errors. The external precision metering system ensures consistent weight and height for each layer and the overall segment. The automatic spreading and leveling device guarantees uniform powder distribution. The precise mold positioning system achieves error margins of less than 0.01 mm. Within the same batch of segments, deviations in diamond placement position, density, and depth are minimized, providing downstream tool manufacturers with highly consistent segments.

4. Intelligence and Automation
The equipment can be optionally equipped with an industrial vision inspection system to enable quality traceability. An optional automatic collection and mold loading system can be added, where finished products after demolding are automatically placed into a designated collection bin, providing a seamless connection for subsequent automatic mold loading processes and reducing manual intervention. Remote diagnostics and maintenance functions enable maintenance and diagnostics from any location with network access, minimizing downtime.

Application Scenarios and Technical Value

The ordered diamond segment cold press can be widely applied in fields such as stone processing, construction engineering, ceramic cutting, photovoltaic silicon wafer cutting, and precision mechanical processing. Whether for large-diameter saw blades or micro-drill bits, this equipment provides corresponding ordered segment forming solutions. It can also produce segments with a laser-welding base layer, ensuring consistent height of this base layer across the entire segment regardless of its curvature.

Ordered arrangement has long been a pursued technical direction in the diamond tool industry. This equipment transforms this concept into a manufacturable capability suitable for scale production. Through the systematic integration of precision machinery, automatic control, and powder forming technologies, it offers a complete technical implementation path for the superhard material tool sector.

Technological Self-Reliance and Equipment Advancement

This equipment achieves technological breakthroughs in key areas such as the layered stacking and pressing method, moving-mold-cavity method, external precision metering method, cavity-separated powder feeding technology, automatic spreading and leveling device, precise mold positioning system, pinhole adsorption placement technology, industrial vision inspection system, automatic collection and mold loading system, and remote diagnostics and maintenance. It provides a viable solution for upgrading manufacturing equipment in the superhard material tool industry. As the application fields of superhard materials continue to expand, and with increasing demands for tool performance consistency, material utilization, and manufacturing efficiency, the ordered diamond segment cold press represents an exploration along this technical route, offering the industry a process choice with systematic advantages.