压力机连杆断裂失效分析

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中图分类号：TH142.2 文献标志码：ADOI： 10.12475/aie.20250607

本文引用格式：，，，等.压力机连杆断裂失效分析[J].自动化与信息工程，2025，46（6）：48-54. ，，，etal.Failureanalysisapressconnectingrodfracture[J].Automation & Infor-mation Engineering，2025，46（6）：48-54.

文章编号：1674-2605（2025）06-0007-07开放获取

Failure Analysis a Press Connecting Rod Fracture

WEI ZijunLIJiayiHE Zhiguo HUANG Dong SI Weizheng

Manufacturing/ Modern ， 51Oo70， China）

Abstract：Aimingatthe problem frequent fracture failurepress connectingrods，this studyanalyzes thecausesrod fracturebasedonanactualcase，andsystematicallyapplies methodssuchasmacro-and micro-fractureobservation，chemical compositionanalsis，etalogapicructurebseatio，tsileaddesstestig，ndfiniteeementalysistolbatiely analyzeteinfluencematerialndstructuralfactorsonthefracture.Theresultssowthatfatiguestriatiosarepresentnearmultiple cracksonthefacturesurface，consistentwiththemorphologicalcharacteristicsfatiguefracture;thematerial's tensilestrength， elongationafterfractureandardnesalleeterequirementsteQ235steesandardutteieldtrengthislowertante standardeqemnttateal'scouctrepiioisenlistrutddrsctratiocursjci between the big end and the rod body，with the maximum stress reaching 47.72MPa .This verifies the cause the connecting rod fracture：undercyclicloading，localplasticeformationoursintheaimumstressreatherod，iitiatingmicrocrackstat graduallpropagateuntilfatiguefractureocurs.Basedonthis，improvementmeasuresfortheconnectingrod'sstructuraldesign， materialselection，andmanufacturingprocessareproposedtonhanceitsftiguestrengthandservicelife，providingareferencefor the design improvement such connecting rods.

words：press; connecting rod; fracture failure;failure analysis; finite element analysis

0 引言

压力机作为工业生产中的关键设备，广泛应用于金属成型、复合材料加工及精密制造等领域。（剩余7057字）