Tech-dat/acturator-dat/acturator-dat.md
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@@ -7,7 +7,7 @@
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- [[servo-dat]] - [[stepper-dat]]
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-- [[motor-dat]] - [[vibrator-dat]] - [[dc-motor-dat]]
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+- [[motor-dat]] - [[vibrator-dat]] - [[motor-brushed-dat]] - [[reduction-Gear-Motor-dat]]
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- [[motor-driver-dat]] - [[mosfet-dat]] - [[switching-dat]]
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Tech-dat/acturator-dat/motor-dat/motor-brushed-dat/reduction-Gear-Motor-dat/reduction-Gear-Motor-dat.md
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@@ -1,7 +1,9 @@
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# reduction-Gear-Motor-dat
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-- [[BLDC-motor-dat]] + [[gearbox-dat]]
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+- [[reduction-Gear-Motor-dat]] == [[motor-brushed-dat]] + [[gearbox-dat]]
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+
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+- [[reduction-Gear-Motor]]
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Tech-dat/cable-dat/cable-ribbon-dat/cable-ribbon-dat.md
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@@ -12,7 +12,9 @@ made for same direction
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![](2025-12-17-17-39-14.png)
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-## install methods
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+## install methods 6 types
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+
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+cable types from A1~A6
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![](2025-12-17-17-47-31.png)
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materials-dat/metal-dat/brass-copper-dat/brass-copper-dat.md
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@@ -0,0 +1,91 @@
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+
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+# brass-copper-dat
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+
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+黄铜、紫铜的英语及区别
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+1️⃣ 英语名称
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+
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+黄铜：Brass
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+
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+紫铜：Copper / Red Copper（工程语境中常说 Pure Copper 或 Electrolytic Copper）
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+
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+2️⃣ 成分区别
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+材料 主要成分
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+黄铜 (Brass) 铜 + 锌（Zn）
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+紫铜 (Copper / Red Copper) 高纯度铜（≈99.9% Cu）
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+3️⃣ 物理与机械性能对比
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+特性 黄铜 (Brass) 紫铜 (Copper)
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+颜色 金黄色 红褐色
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+硬度 较高 较低
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+延展性 中等 极好
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+导电性 较好 极佳
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+导热性 较好 极佳
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+耐腐蚀性 好 很好
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+可加工性 很好（易切削） 较差（易粘刀）
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+4️⃣ 常见用途
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+
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+黄铜（Brass）
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+
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+轴套、齿轮
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+
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+管接头、阀门
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+
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+螺丝、装饰件
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+
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+乐器（如小号）
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+
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+紫铜（Copper / Red Copper）
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+
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+电线、电缆
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+
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+散热器、热交换器
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+
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+PCB 铜箔
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+
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+水管、接地材料
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+
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+5️⃣ 工程常用术语补充
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+
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+Free-cutting brass：易切削黄铜
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+
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+Naval brass：海军黄铜（耐海水）
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+
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+Oxygen-free copper (OFC)：无氧铜
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+
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+Electrolytic copper：电解铜
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+
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+6️⃣ 一句话总结
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+
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+黄铜更适合机械加工和结构件，紫铜更适合电气与散热应用。
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+
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+
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+## brass tube
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+
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+- 6*0.2*半米
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+- 6*0.25*半米
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+- 6*0.3*半米
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+- 6*0.4*半米
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+- 6*0.5*200mm
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+- 6*0.5*半米
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+- 6*0.75*半米
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+- 6*1*200mm
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+- 6*1*半米
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+- 6*1.2*半米
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+- 6*1.5*200mm
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+- 6*1.5*半米
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+- 6*2*半米
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+
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+- 6.5*0.25*半米
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+- 6.5*0.5*半米
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+- 6.5*1*半米
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+
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+## copper tube
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+
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+
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+
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+
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+## ref
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+
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+- [[metal-dat]]
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+
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+
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+- [[brass-copper]] - [[metal]] - [[materials]]
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\ No newline at end of file
materials-dat/metal-dat/metal-dat.md
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+
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+# metal-dat
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\ No newline at end of file
materials-dat/plastic-dat/plastic-dat.md
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@@ -11,23 +11,23 @@ PU PTFE PP PA6 PE PVC FR4 PEEK Bakelite PVDF ABS NBR POM 6mm
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stainless steel / copper rod 3mm
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-| Material (Rod) | Tensile Strength (MPa) | Yield Strength (MPa) | Toughness (Impact) |
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-|----------------|-------------------------|------------------------|----------------------|
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-| **Stainless Steel (3 mm, 304/316)** | 520–620 | 200–300 | ★★★★★ Very high |
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-| **Copper (3 mm)** | 200–250 | 70–120 | ★★★★ Good |
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-| **PEEK (6 mm)** | 90–100 | 80–95 | ★★★★ Good |
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-| **FR4 (Fiberglass, 6 mm)** | 300–350 (in fiber direction) | ~250 | ★★★ Medium (brittle) |
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-| **POM / Acetal (6 mm)** | 60–70 | 55–65 | ★★★★ Good |
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-| **PA6 / Nylon 6 (6 mm)** | 60–80 | 45–70 | ★★★★ Good (better when moist) |
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-| **PVC (6 mm)** | 45–55 | 40–50 | ★★★ Medium |
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-| **PVDF (6 mm)** | 45–55 | 40–50 | ★★★ Medium |
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-| **ABS (6 mm)** | 35–50 | 30–40 | ★★★ Medium–High |
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-| **PU (Polyurethane, 6 mm)** | 25–55 | 25–45 | ★★★★★ Very tough/elastic |
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-| **PP (6 mm)** | 25–40 | 20–35 | ★★★ Medium (brittle when cold) |
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-| **PTFE (6 mm)** | 20–30 | 10–20 | ★★ Low, very soft |
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-| **PE (HDPE, 6 mm)** | 20–35 | 15–30 | ★★★ Medium |
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-| **Bakelite (Phenolic, 6 mm)** | 50–100 | 40–60 | ★★ Very brittle |
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-| **NBR (Rubber, 6 mm)** | ~15 | N/A (elastomer) | ★★★★★ Extremely tough but soft |
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+| Material (Rod) | Tensile Strength (MPa) | Yield Strength (MPa) | Toughness (Impact) |
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+| ----------------------------------- | -------------------------------- | -------------------- | ------------------------------ |
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+| **Stainless Steel (3 mm, 304/316)** | 520–620 | 200–300 | ★★★★★ Very high |
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+| **Copper (3 mm)** | 200–250 | 70–120 | ★★★★ Good |
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+| **PEEK (6 mm)** | **90–100** | **80–95** | **★★★★ Good** |
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+| **FR4 (Fiberglass, 6 mm)** | **300–350 (in fiber direction)** | **~250 ** | **★★★ Medium (brittle)** |
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+| **POM / Acetal (6 mm)** | 60–70 | 55–65 | ★★★★ Good |
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+| **PA6 / Nylon 6 (6 mm)** | 60–80 | 45–70 | ★★★★ Good (better when moist) |
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+| **PVC (6 mm)** | 45–55 | 40–50 | ★★★ Medium |
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+| **PVDF (6 mm)** | 45–55 | 40–50 | ★★★ Medium |
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+| **ABS (6 mm)** | 35–50 | 30–40 | ★★★ Medium–High |
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+| **PU (Polyurethane, 6 mm)** | 25–55 | 25–45 | ★★★★★ Very tough/elastic |
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+| **PP (6 mm)** | 25–40 | 20–35 | ★★★ Medium (brittle when cold) |
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+| **PTFE (6 mm)** | 20–30 | 10–20 | ★★ Low, very soft |
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+| **PE (HDPE, 6 mm)** | 20–35 | 15–30 | ★★★ Medium |
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+| **Bakelite (Phenolic, 6 mm)** | 50–100 | 40–60 | ★★ Very brittle |
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+| **NBR (Rubber, 6 mm)** | ~15 | N/A (elastomer) | ★★★★★ Extremely tough but soft |
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@@ -42,7 +42,8 @@ Ranking by Tensile Strength (highest → lowest)
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- PTFE (6 mm) (very soft, creeps heavily)
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- NBR (rubber) (not for structural load)
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-
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+- 聚氨酯
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+-
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