PE管の溶接温度が高すぎるとどうなりますか?

2025-08-19

PEパイプは、その優れた性能により、給排水やガス輸送などの分野で広く使用されています。PEパイプを接続する主な方法の1つとして、溶接の品質は、パイプラインシステム全体の安全性と安定した動作に直接関係しています。溶接プロセスでは、温度制御が重要なリンクです。多くの人は、少し高温で溶接するとより堅牢になると思うかもしれませんが、そうではありません。PEパイプの分野で豊富な経験を持つADパイプとして、今日はPEパイプの溶接温度が高すぎるとどうなるか、そしてそれがもたらす可能性のある一連の悪影響について詳しく説明します。

まず、溶接温度が高すぎると、PEパイプの材料が劣化する可能性があります。高温でのPE材料は、その分子鎖は、引張強度、衝撃靭性、遅い亀裂成長能力などの物理的および機械的特性の管自体が大幅に減少するように、破壊、酸化分解が発生します。西暦パイプはPEパイプの原材料の選択と生産技術を厳格に管理して、パイプ自体が優れた性能を持っていることを確保しているが、これも正しい溶接技術が協力して、その最高の性能を発揮する必要がある。

第二に、溶接温度が高すぎると溶接品質にマイナスの影響を与え、溶接部に様々な欠陥が発生する。温度が高すぎると、PE溶融物が過度に溶け、溶接圧力の作用でオーバーフローが発生し、溶接継手の有効溶接面積が減少する可能性がある。同時に、高温は溶接界面の材料を炭化させ、焦げ現象を発生させる可能性があり、溶接口の外観品質に影響を与えるだけでなく、溶接界面の分子融合を破壊し、溶接接合強度を低下させ、シール性を低下させる。このような溶接部は、内圧や外部荷重にさらされると、漏れや破裂が発生しやすく、プロジェクトに深刻な安全上の問題を残します。特に、シール要件が非常に高い一部のガス輸送または化学流体輸送プロジェクトでは、そのような問題の結果は想像を絶するものです。

さらに、溶接温度が高すぎると、溶接作業の円滑な進行と建設効率に影響を与える可能性があります。過度に溶けたPE材料は、炭化により流動性が非常に悪くなったり、粘性が高くなったりするため、溶接工の操作に不便をもたらし、溶接プロセスを正確に制御することが困難になります。高温により、刺激臭や煙が発生し、建設環境やオペレーターの健康に影響を与えることもあります。さらに、溶接欠陥が発生した後、手直しを行う必要があります。これにより、建設費が増加し、建設期間が延長され、全体的な建設効率が低下することは間違いありません。

また、経済的な観点から、溶接温度が高すぎることによる溶接ポートの品質問題は、手直しを必要とするだけでなく、人的および物的資源を浪費するだけでなく、使用中に故障が発生すると、水やガスの停止などの直接的な損失が発生します。間接的な損失と修理費用は莫大です。したがって、PEパイプの溶接温度を厳密に制御することは、単純な操作の詳細のように見えますが、実際にはプロジェクト全体の品質、安全性、および経済性に関連しています。

要約すると、PEパイプの高すぎる溶接温度は些細なことではなく、材料性能、溶接品質、したがって、PE管の溶接作業を行うときは、厳密にPE管の溶接工程パラメータ(溶接温度、加熱時間、溶接圧力、冷却時間などを含む)に従って操作する必要があります。オペレーターは、専門的なトレーニングを受け、使用するPE管材の特性とそれを支える溶接設備の操作規程に精通し、資格のある溶接設備を使用して施工する必要があります。ADパイプは通常、異なる仕様やグレードのPEパイプのための詳細な溶接工程指導を提供し、建設ユニットはそれに注意を払い、厳格に実行することをお勧めします。この方法でのみ、PE管溶接ジョイントの品質を確保し、パイプラインシステム全体の安全、安定、長期運転を保証することができます。高品質のAD PEパイプを選択し、正しい溶接工程と組み合わせて、作業の品質を信頼できる保証することができます。


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