GB/T39519-2020高应力液压件圆柱螺旋压缩弹簧蠕变试验，将弹簧压缩到指定负荷所对应的长度，在室温条件下保持一定时间，测试试验前后弹簧自由长度的变化量。当需要高温测试，可采用环境箱在一定温度下进行试验。自由长度损失率安规定公式计算。

GB/T39519-2020高应力液压件圆柱螺旋压缩弹簧技术条件。标准规定了高应力液压元件用圆截面等节距圆柱螺旋压缩弹簧的技术要求、试验方法、检验规则、包装、合格证、标志、运输、贮存。GB/T 39519-2020适用于弹簧材料直径小于等于10 mm高应力液压元件用圆柱螺旋压缩弹簧。

多工位空气弹簧疲劳试验机；多工位螺旋弹簧高低温疲劳试验机；5N.m全自动弹簧扭转试验机；100N.m涡卷弹簧扭转疲劳试验机；弹簧减震器示功特性试验机；5N.m500N金属接骨螺钉自攻力扭矩试验系统；HRJ-20kN石膏砌块断裂荷载试验机；HRJ-615木板材在线厚度自动测量系统；500kN线缆拉力试验套管成型快速液压机；HRJ-N150夹扭剪切钳抗弯扭力剪切性能试验机；滚刀刀圈耐磨粒磨损抗冲击疲劳试验机；传动轴联轴器力矩限制器打滑力矩标定测试系统； 500kN.m联轴器扭矩预磨标定刚度疲劳试验台；联轴器膜片拉弯扭三维动力荷载疲劳试验系统；300kN双缸举升吨袋提吊加压跌落试验机；600kN电子加载叠加力标准机；6MN液压加载叠加力标准机；100kN拉压式工作测力仪校准检定装置；100kN铁路接触网张力测量仪校准装置；1000kN全自动炸药压制成型强度试验机；弹簧拉压扭转疲劳刚度性能试验机；微机控制弹簧拉压试验机；双工位螺旋弹簧气弹簧拉压试验机；600kN微机控制弹簧拉压试验机；恒瑞金试验机；10kN微机控制气弹簧拉压试验机；QTW-300kN强力氮气弹簧试验机；1kN气压棒拉压试验机；3000kN机车车辆弹簧试验机；200kN弹簧横向刚度载荷试验机；弹簧垂向动态刚度试验机；ASR-300kN空气弹簧刚度气密性试验机；动车悬挂系统空气弹簧水平大位移循环载荷试验机；300kN铁路车辆空气弹簧静态刚度试验台；300kN空气弹簧二维刚度疲劳试验机；200kN橡胶应急弹簧二维刚度疲劳试验机；300kN车辆缓冲器圆弹簧试验机；100kN车钩缓冲器螺旋弹簧拉压试验机；1000kN钢制螺旋弹簧压力试验机；3000kN铁道车辆缓冲器静压试验机；悬架空气弹簧高低温台架疲劳寿命试验机；驾驶室空气弹簧高低温疲劳寿命试验机；三工位空气弹簧高低温疲劳耐久性试验机；300kN钢板叶片弹簧刚度变形压力试验机；50kN弹簧套管扶正器试验机；20kN 弹簧疲劳试验机；十工位螺旋弹簧疲劳试验机；2工位气压棒疲劳试验机；300kN空气弹簧高低温疲劳试验机；变压器波纹储油柜耐压试验变形自动检测装置；20000N.m30t绝缘子组件拉压弯扭测试系统；50kN线夹对地线导线握力试验机（DL/T765.3-电力金具试验方法）；

high stress spring creep test；Couplings Torque Pre Grinding Calibration Stiffness Fatigue Test Bench；Double Hydraulic Cylinder Lift FIBC Automata Load Drop Tester；Spring Tension Compression Torsion Fatigue Stiffness Properties Testing Machine；Battery Spring Tester；Sofa Spring Tester；HRJ Tester；Micro Spring Tester；Little Spring Tester；Load switch Spring Tensile Compression Tester；Circuit-breaker Spring Tensile Compression Tester；Spring Clamp Compression Stiffness Tester；Wavy Plate Spring Compression Tester；Side Ripple Spring Compression Stiffness Tester；Computer Spring Tensile Compression Testing Machine；Two Spring Tensile Compression Tester；Computer Gas Spring Tensile Pressure Tester；Nitrogen Gas Spring Pressure Tester；Gas Springs Tensile Compression Tester；Desktop Spring Tension Compression Tester；Main Steam Safety Valve Spring Load Tester；Vehicle Spring Compression Tester；Spring Transverse Stiffness Tester；Spring Transverse Stiffness Load Tester；Spring Vertical Dynamic Stiffness Tester；Air Spring Stiffness Air Tightness Tester；Air Spring Vertical Horizontal Transverse Stiffness Fatigue Tester；Railway Vehicle Air Spring Static Stiffness Testing Machine；Air Spring Two-Dimensional Stiffness Fatigue Tester；HRJ Tester；Rubber Spring Two-Dimensional Stiffness Fatigue Tester；Spring bumper Tension Compression Tester；Steel Helical Spring Compression Tester；Railway Bogie Coil Spring Tester；Railway Vehicle Draft Gears Static Load Tester；Air Suspension Air Spring High Low Temperature Fatigue Life Tester；Commercial Vehicles Cab Air Spring Fatigue Life Tester；High Speed Train Shock Absorber Fatigue Life Tester；Railway Vehicle Shock Absorber Fatigue Life Tester；Helical Spring Compression Testing Machine；Coil Spring Compression Tester；Automobile Leaf Spring Compression Tester；Bow-spring Casing Centralizers Tester；Multi position Spring Fatigue Tester；Ten Position Helical Spring Fatigue Tester；Two Gas Springs Fatigue Tester；Mattress Spring Fatigue Life Tester；Multi position Air Spring High Low Temperature Fatigue Tester；Helical Spring High Low Temperature Fatigue Tester；Gas Spring High Low Temperature Fatigue Tester；Desktop Spring Torsion Tester；Computer Spring Torsion Tester；Spiral Spring Torsion Fatigue Tester；spring shock absorber force-displacement characteristic tester；Explosive Material Compression Molding Strength Tester；Pliers and Nippers Bending Torsion Shear Force Tester；Power Electronics Energy Power Electrical Engineering Test System；Transformer corrugated oil storage tank fatigue test bench；