SLS Printing - Shenzhen Hofengfab Precision Manufacturing

SLS 인쇄 service

부품의 신속한 프로토타이핑 및 생산, 부품의 빠른 제작, 모든 부품에 대해 10일, 100% 검사 가능

ISO 9001 인증으로 모든 배치에 등급 품질을 제공합니다.

what is SLS 3d printing

Selective Laser Sintering (SLS), also known as selective laser sintering or selective laser sintering technology, was first proposed by Carl Deckard of Texas University in the United States, and the commercial prototype equipment was officially launched on the market in 1992.

Laser sintering 3D printing technology mainly uses the basic principle of high-temperature sintering of powder materials under laser irradiation, and realizes precise positioning through computer-controlled light source positioning device, and then sintering and stacking layer by layer. Therefore, SLS technology also uses the stacking and stacking method. The main difference is that before irradiation, a layer of powder material needs to be laid, and then the material is preheated to a temperature slightly lower than the melting point, and then the laser irradiation device is used to scan the cross section of the layer, so that the temperature of the irradiated part of the powder rises to the melting point, so that it is sintered to form a bond. Then the process of laying powder and sintering is repeated until the entire model is printed.

The SLS process mainly supports powdered raw materials, including metal powder and non-metallic powder, and then stacks them by laser irradiation and sintering principle. The printing principle of SLS is very similar to that of SLA, the main difference lies in the materials used and their forms. The raw materials used by SLA are mainly liquid UV-sensitive curable resins, while SLS uses powdered materials.

how does SLS 3d printing work

√During printing, the entire printing chamber is always kept at a temperature slightly lower than the melting point of the powder material.

√ The material powder is spread on the upper surface of the formed part and scraped flat.

√ A high-intensity CO2 laser is used to irradiate the layer section of the part on the newly laid layer. The material powder is sintered together under the high-intensity laser irradiation and bonded to the formed part below.

√After a layer of cross-section is sintered, a new layer of powder material is laid through the powder laying system, and then the next layer of cross-section is printed.

SLS 3D Printing Materials

Selective laser sintering (SLS) frequently utilizes nylon as its primary material, a versatile engineering thermoplastic renowned for its dual-purpose capabilities in functional prototyping and end-use production.

SLS nylon parts excel in terms of strength, stiffness, and durability. These final products possess remarkable impact resistance, enduring repeated wear and tear without compromising their integrity. Moreover, nylon's inherent resilience against UV exposure, light, heat, moisture, solvents, temperature fluctuations, and water ensures prolonged performance and longevity.

What's more, SLS nylon components can also be biocompatible and non-sensitizing, making them safe for direct contact with the skin and suitable for various applications. This versatility and durability make SLS nylon parts a top choice for numerous industries, from automotive to medical, where robust and long-lasting components are paramount.

SLS의 장점과 단점

SLS의 장점:

(1) 고강도 및 우수한 재료 특성을 가진 제품을 생산할 수 있으며 최종 제품으로 직접 사용할 수도 있습니다.
(2) 엔지니어링 플라스틱, 왁스, 금속, 세라믹 파우더 등 다양한 종류의 원료를 사용할 수 있습니다.
(3) 부품의 제작 시간이 짧고 인쇄 된 물체의 정밀도가 매우 높습니다.
(4) 지원 부품을 설계하고 구성할 필요가 없습니다.

SLS Disadvantages:

(1) 주요 구성 요소는 손실이 크고 특별한 실험실 환경이 필요합니다.
(2) 인쇄 시 안정적인 온도 제어가 필요하고 인쇄 전후에 예열과 냉각이 필요하며 후처리도 번거롭습니다.
(3) 원자재 가격 및 조달 및 유지보수 비용이 높습니다.
(4) 성형 표면은 분말 입자의 크기와 레이저 스폿에 의해 제한되어 인쇄 정확도에 영향을 미칩니다.
(5) 완전히 밀폐된 중공 디자인을 직접 인쇄하는 것은 불가능하며 분말 재료를 제거하기 위해 구멍을 남겨야 합니다.

기타 제조 역량

당사는 3D 프린팅, CNC 가공, 진공 주조, 사출 성형 및 판금 제작을 전문으로 하며 다양한 재료와 표면 마감을 제공합니다.