金刚石线环切割有哪些优点?

金刚石线环切割技术是取代传统自由砂浆切割的先进切割技术, 广泛应用于光伏、半导体行业的硅片切割领域.

其开发过程如下:

第一阶段: The Era of Free Abrasive Slurry Cutting Monopoly

Prior to the maturation of diamond wire technology, 太阳能电池和半导体硅片的切割主要依赖自由磨料浆切割 (FASC). This method involved high-speed steel wires carrying a slurry—a mixture of abrasives like silicon carbide or zirconium corundum with polyethylene glycol—to slice silicon ingots through a “三体磨削” mechanism.

然而, this technique presented significant drawbacks:

• Low Efficiency and High Material Loss: The cutting speed was slow, and the resulting kerf was wide (typically exceeding 200 microns), leading to the waste of over 40% of the expensive silicon material during the process.
• Severe Pollution and High Costs: It generated large volumes of waste slurry that were difficult to handle, incurring high subsequent cleaning and disposal costs.
• Deep Surface Damage: The uncontrolled cutting process often caused deep damage layers on and beneath the wafer surface, adversely affecting further processing and the performance of the final solar cells.

 

Phase Two: Pioneering Application of Diamond Wire by Japanese Enterprises

Japanese companies, notably Asahi Diamond Industrial Co., 有限公司. and Nakamura Choukou Co., 有限公司, achieved a technological breakthrough. They employed an electroplating process to firmly “plant” micron-sized diamond particles onto high-strength steel wire substrates, creating a diamond wire with “fixed abrasives.”

 

The fundamental cutting mechanism shifted from “三体磨削” 到 “two-body abrasion”: the diamond particles, acting as fixed cutting edges, directly engaged with the material without rolling. This innovation increased cutting efficiency severalfold compared to the free abrasive method. In the early 2000s, this technology was primarily used for precision cutting of high-value, hard, and brittle materials like sapphire and optical glass. The wires were relatively thick and represented a specialized, high-end tool.

 

Phase Three: The Breakthrough of Thinner Wires and the Dawn of Photovoltaic Application

As the photovoltaic (光伏) industry’s demand for cost reduction grew more urgent, the sector recognized that “wire diameter directly determines silicon material loss.” To achieve narrower kerfs and increase yield (more wafers per kilogram of silicon ingot), “thinner wire” development became the core focus of technological advancement.

 

Japanese companies continued to lead this progression, gradually reducing the diamond wire diameter from initial hundreds of microns to 17.5mm and even 14.5mm levels. Each reduction in diameter demanded more precise electroplating techniques and stronger wire substrates. This phase marked the expansion of diamond wire technology from niche applications like sapphire cutting into the realm of large-scale PV silicon wafer slicing, demonstrating immense potential for cost reduction.

Phase Four: The Rise of Chinese Enterprises and Global Industrial Adoption

Although the technology originated in Japan, the widespread global adoption and significant cost reduction of diamond wire cutting in the PV industry were primarily driven by Chinese enterprises. Companies such as Diamond Wire Technology Co., 有限公司. and DaLee New Materials Co., 有限公司. achieved key technological breakthroughs and scaled up production in the mid-to-late 2010秒.

 

The contributions of Chinese manufacturers are mainly reflected in:

• Scale and Cost: Through massive capacity expansion and technological optimization, they brought down the high cost of diamond wire to a level widely acceptable for the PV industry.
• Technological Advancement: They persistently drove the “thinner wire” competition, pushing the mainstream diameter to 80μm, 60微米, and currently to the mass-produced 35μm level, drastically reducing silicon material costs.
• Process Integration: Through close collaboration with major Chinese wafer manufacturers (例如, 隆基, TCL Zhonghuan), they jointly perfected the complete set of cutting processes, establishing it as the industry standard.

 

The market landscape was consequently transformed. 由 2017, diamond wire cutting had completely replaced slurry cutting, becoming the mainstream process for crystalline silicon wafering, with a penetration rate exceeding 95%. 今天, China holds the vast majority of the global diamond wire production capacity. 此外, it is propelling the application of this technology into broader semiconductor and precision machining fields, 包括碳化硅, 蓝宝石, and magnetic materials.

优势 金刚石线环 切割主要包括——切割速度, 高效率, high productivity.

更高的精度和更低的损伤层, 切割薄板时的材料损失和烧毁, 有利于切割更薄的硅片或其他高价值原材料.

质量管理, 单件成本低.

使用水性磨削液有利于改善工作环境，简化清洗等后处理程序, 简单环保.

所以, 金刚石环切割已成为光伏行业晶体硅切片的主流切割工艺. 因为 2015, Ensolltools Technology Co., 有限公司. 开始深耕金刚石线锯切割领域, 产品竞争力持续提升, 市场占有率逐年增加.

在钻石环方面, 公司在罚款方面继续引领行业, 突破了0.3mm金刚石环技术壁垒, 积极开发储量和试制更细直径的金刚石环, 随着 金刚石环切割设备 由我们开发, 更细的线径有助于减少原材料的切割损失, 特别稀有和有价值的材料, 同时提高切割精度和效率. 降低切割能耗.