Suspension Tube
説明
Aluminum Bicycle Suspension Tube: Fork Stanchion
The aluminum bicycle suspension tube is the sliding tube (stanchion) of a suspension fork. Its upper end is fixed in the crown and its lower end slides inside the fork’s lower leg, carrying friction and bending loads as the suspension works. This version is a long slender tube with a flanged end and bore, which can serve as a seat for internal damper or spring components.
The stanchion’s outer diameter is the running surface for seals and bushings, so it needs tight diameter tolerance, good roundness and straightness, and usually a hard-anodized or other wear-resistant surface. Al Forge Tech (AFT) cold impact extrudes the tube and end, finish-turns the outer diameter and end, straightens and inspects straightness after heat treatment, and offers hard anodizing.
主な機能
- Tube body and flanged end cold formed
- OD finish-turned as the running surface for seals and bushings
- Straightened after heat treatment to control straightness
- Hard anodizing available for wear resistance
Aluminum Bicycle Suspension Tube Specifications and Manufacturing Capability
| 商品 | 詳細 |
|---|---|
| 製品カテゴリー | Aluminum Forging Bicycle Parts |
| 申請 | Suspension fork stanchions for bicycles and e-bikes |
| 主なプロセス | Cold impact extrusion (cold forging presses 260T–2,500T) |
| 素材 | お客様の仕様に合わせて選択可能。2xxx、5xxx、6xxx、7xxx シリーズのアルミニウム合金（例：2014、6061、6082、7075） |
| 熱処理 | 合金および強度要件による社内T4処理（8ユニット）およびT6人工老化（7ユニット） |
| 二次加工 | CNC加工（52台の加工センター、30台の旋盤）、バリ取り、振動仕上げ |
| 表面仕上げ | 必要に応じて、陽極酸化（硬陽極酸化を含む）、ショットブラスト、電子コーティングまたは塗装 |
| 検査 | ザイツCMM（4台）、硬度計、分光計、蛍光透過検査ライン |
| 寸法と公差 | 顧客ごとに2D/3D図面 |
| 品質システム | IATF 16949:2016、ISO 14001:2015 |
Aluminum Bicycle Suspension Tube Manufacturing Process
- ドローイングレビューとDFM合金、荷重方向、重要な寸法を確認し、その後 QForm シミュレーションを実行して金属流動と欠陥リスクを予測します。.
- デザインと製造ダイセットの数（例えば、ブロッカーダイとファイニッシャーダイ）は部品の複雑さに合わせて計画されており、ダイの形状は携帯型3Dスキャナーで確認されます。.
- Cold forging: impact extrusion on 260T–2,500T presses, suited to thin-walled, tubular and dimensionally repeatable parts.
- 熱処理T4溶液処理とT6人工老化は社内で実施され、合金および強度要件によって設定されたパラメータが使用されます。.
- CNC加工 そして仕上げ穴、スレッド、接合面は機械加工され、その後、必要に応じてバリ取り、振動仕上げ、ショットブラスト、または陽極酸化が行われます。.
- 検査と発送寸法、硬度、化学組成はCMM、硬度計、分光計を用いて確認され、ロットのトレーサビリティはIATF 16949に従って管理されています。.
よくある質問
Why does a suspension stanchion need hard anodizing?
The stanchion OD rubs continuously against seals and bushings as the fork works; insufficient surface hardness leads to wear and scoring, causing oil leaks or sticky action. Hard anodizing forms a thicker, harder oxide layer on aluminum, improving wear and corrosion resistance. AFT offers hard anodizing, and film thickness must be planned with the OD tolerance on the drawing because the coating affects final size.
How are stanchion OD and straightness controlled?
After impact extruding the tube, AFT completes heat treatment and straightening first, then finish-turns the outer diameter so final dimensions are not affected by heat-treatment distortion. Diameter, roundness and straightness are then inspected with CMM and gauges; where surface treatment follows, machining size allows for film thickness.
Can the Aluminum Bicycle Suspension Tube be anodized or given other surface finishes?
Yes. Al Forge Tech offers anodizing (including hard anodizing), shot blasting, vibratory finishing, e-coating and painting, plus pickling and ultrasonic washing lines to clean parts after machining. Please note the finish type and film thickness on the drawing so machining allowances and cosmetic standards for the Aluminum Bicycle Suspension Tube can be evaluated together.
How are MOQ and lead time for the Aluminum Bicycle Suspension Tube determined?
MOQ and lead time depend on part size, number of die sets, alloy and machining scope, and are confirmed in the quotation after drawing review. The typical sequence is die development, forged samples, sample approval and then mass production. Sharing your annual volume and call-off schedule helps us plan dies and capacity for the Aluminum Bicycle Suspension Tube.
Can Al Forge Tech supply the Aluminum Bicycle Suspension Tube from forging through machining?
Yes. Forging, heat treatment, CNC machining, surface finishing and inspection are integrated in one facility: 52 CNC machining centers (40 four-axis and 12 4.5-axis), 30 lathes (14 with robotic loading), plus broaching, burnishing and centerless grinding. The Aluminum Bicycle Suspension Tube can be delivered as a forged blank, semi-finished or fully machined part.
Request a Quote for the Aluminum Bicycle Suspension Tube
Developing a new Aluminum Bicycle Suspension Tube or converting an existing part to aluminum forging? Send us your 3D/2D drawings, alloy and temper, annual volume and finishing requirements. Our engineering team will reply with a feasibility review, die plan and quotation.
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類似のパーツを比較するには、閲覧してください。 Aluminum Forging Bicycle Parts そして私たちの 自動車用アルミニウム鍛造用途, または、こちらをご覧ください 会社紹介 当社の設備および認証について。.
