Polymer melt is extruded through a multi-hole die plate of an extruder, forming multiple strands.聚合物熔体通过挤出机的多孔模板挤出，形成多股。

These strands immediately enter a sealed cutting chamber filled with cooling water.这些钢索立即进入一个充满冷却水的密封切割室。

Underwater, high-speed rotating knives press against the die face, cutting the extruded strands into pellets.在水下，高速旋转的刀压在模具表面，将挤出的股切成颗粒。

The freshly cut pellets are fully submerged and rapidly cooled/solidified (quenched) by the water.将新切割的颗粒完全浸入水中并迅速冷却/固化（淬火）。

Pellets and water are conveyed out of the cutting chamber to a dewatering and drying system for separation and drying.颗粒和水被输送出切割室到脱水和干燥系统进行分离和干燥。

Cutting Environment: Entirely underwater.切割环境：完全在水下。

Cooling: Instantaneous quenching upon cutting. Extremely rapid cooling.冷却：切割时瞬间淬火。极快的冷却。

Pellet Morphology: Spherical or oval pellets with smooth surfaces, high dimensional uniformity, and regular geometry (near-cubic or cylindrical). Minimal tail formation.颗粒形态：球形或椭圆形颗粒，表面光滑，尺寸均匀，几何形状规则（近立方或圆柱形）。最小的尾部形成。

Moisture Content: High moisture exiting the chamber requires robust dewatering/drying.水分含量：高水分排出腔室需要强大的脱水/干燥。

Noise & Dust: Low noise (submerged cutting), dust-free.噪音及粉尘：低噪音（水下切割），无尘。

Polymer melt is extruded through a multi-hole die plate, forming strands.聚合物熔体通过多孔模板挤出，形成股。

Strands enter a special cutting chamber in an air (or inert gas) environment.钢绞线进入空气（或惰性气体）环境中的特殊切割室。

High-speed rotating knives cut the strands into pellets in air, against the die face.高速旋转的刀在空气中将钢绞线切成颗粒，紧贴模具表面。

Simultaneously, a high-velocity circulating stream of cooling water (“water ring”) is precisely injected near the cutting point, forming a rotating water curtain/ring that envelops the hot pellets for rapid cooling and conveyance.同时，高速循环的冷却水流（“水环”）被精确地注入切割点附近，形成一个旋转的水幕/水环，包裹热颗粒，用于快速冷却和输送。

Pellets are carried away by the water ring to the drying system.颗粒被水环带到干燥系统。

Cutting Environment: Cutting occurs in air.切割环境：切割发生在空气中。

Cooling: Pellets instantly enveloped by high-speed water flow for rapid cooling (slightly slower quenching than underwater pelletizing).冷却：球团瞬间被高速水流包裹，快速冷却（淬火速度比水下球团稍慢）。

Pellet Morphology: Generally spherical pellets, potentially less regular than underwater pellets; may exhibit slight tails. Good dimensional uniformity.球团形态：一般为球形球团，可能不如水下球团规则；可能有轻微的尾巴。尺寸均匀性好。

Moisture Content: Lower than underwater pelletizing, but still requires drying.水分含量：低于水下造粒，但仍需要干燥。

Noise & Dust: Higher noise than underwater (cutting in air), but water ring effectively suppresses dust.噪音和灰尘：噪音比水下高（在空气中切割），但水环有效地抑制灰尘。

Polymer melt is extruded through a die with a single large hole or few large holes, forming thick strands or ropes.聚合物熔体通过带有单个大孔或几个大孔的模具挤出，形成粗股或绳索。

No rotating knives. 没有旋转刀。

One or multiple high-pressure water jets directly impact the hot extrudate, using hydraulic force and shear to tear and fragment it into irregular chunks or pellets.一个或多个高压水射流直接冲击热挤出物，利用水力和剪切力将其撕裂并破碎成不规则的块状或颗粒状。

Fragmented particles are carried away and cooled by the water flow.破碎的颗粒被水流带走并冷却。

Cutting/Fragmentation Method: Hydraulic impact fragmentation. No mechanical knives.切割/破碎方式：液压冲击破碎。没有机械刀。

Cooling: Particles cooled while being carried away by water. Cooling rate depends on particle size and water velocity.冷却：颗粒在被水带走的同时冷却。冷却速度取决于颗粒大小和水速。

Pellet Morphology: Highly irregular shapes (flakes, chunks, strings). Very wide size distribution, poor uniformity. Often “rat-dropping-like”.

Moisture Content: Irregular, porous particles retain very high moisture; extremely difficult to dry.水分含量：不规则，多孔颗粒保留非常高的水分；极难干燥的

Noise & Dust: Noise mainly from high-pressure pumps.噪音和灰尘：噪音主要来自高压泵。

Primarily for applications with minimal pellet shape requirements, e.g.:主要用于颗粒形状要求最小的应用，例如：

Recyclate pelletizing (especially contaminated/dirty materials hard to cut cleanly).回收球团（特别是污染/脏的材料难以切割干净）。

Highly-filled compounds (e.g., masterbatches with high CaCO₃).高度填充的化合物（例如，含有高CaCO₃的母粒）。

Specific, extremely viscous materials difficult to cut with knives (e.g., some sealant bases).难以用刀具切割的特殊粘性材料（如某些密封胶基）。

Processes where pellet shape is irrelevant for downstream processing (e.g., certain compounding).颗粒形状与下游加工无关的工艺（例如，某些复合）。