1、GM DAEWOO Auto & Technology EDS Engineering, GM DAEWOO Auto & Technology Standards THE TEST METHOD FOR THE RING INSERT FOR BOLTING APPLIED TO PLASTIC COMPONENTS EDS-T-7534 ISSUED DATE: 1998. 02. 23 REVISED DATE: 2006. 06. 19 VERSION: 2 EDS-T-7534THE TEST METHOD FOR THE RING INSERT FOR BOLTING APPLIE
2、D TO PLASTIC COMPONENTS PAGE: 1/2 ISSUED DATE: 1998. 02. 23 REVISED DATE: 2006. 06. 19 VERSION: 2 GM DAEWOO Auto & Technology 1. PURPOSE This standard aims at specifying methods of measuring pull out force and residual screwing torque of the ring insert which is inserted to the bolted portions of ve
3、hicle plastic parts. 2. SCOPE This standard applies to test of the ring insert used for vehicle plastic parts (cam cover, air intake manifold, distributor water, thermostat housing, etc.). 3. TEST SAMPLES 3.1. Either a finished products or its part may be used as test samples. 3.2. Three test pieces
4、 are required for approval test, and one for incoming inspection. 4. PRE-TREATMENT Unless specified otherwise, test samples shall be exposed to temperature of 232K and relative humidity of 505% for min. 16 hours. 5. TEST EQUIPMENT AND REAGENT 5.1. Push-pull gauge 5.2. UTM (1 ton) 5.3. Torque wrench
5、6. TEST METHODS 6.1. Insert pull out force measuring test 6.1.1. Use a finished product or the portion including the insert for the test sample. 6.1.2. Measure the force until the insert is separated using a push-pull gauge or UTM (1 ton). 6.1.3. Required specifications until separation according to
6、 insert types are as follows: (1) Threaded insert : min 4500 N (2) Bushing (non-threaded insert) : min 80 N Other requirements shall be specified in drawings or test specifications upon necessity. 6.2. Residual screwing torque test 6.2.1. Apply torque to the test sample to fasten the insert and bolt
7、. Torque applied at fastening is as follows EDS-T-7534THE TEST METHOD FOR THE RING INSERT FOR BOLTING APPLIED TO PLASTIC COMPONENTS PAGE: 2/2 ISSUED DATE: 1998. 02. 23 REVISED DATE: 2006. 06. 19 VERSION: 2 GM DAEWOO Auto & Technology according to bolt types: Bolt type Torque at insert fastening M6 8
8、.0 11.0 Nm M8 19.0 26.0 Nm Other bolts Separately specified in drawings or test specifications 6.2.2. After pre-treating the test sample, which includes fastened insert and bolt, to the specified conditions, remove the fastened bolt using a torque wrench. The measured residual torque shall not be le
9、ss than 80% of torque before pre-treatment. Pre-treatment conditions in consideration of vehicle conditions shall be specified in test specifications, such as chemical resistance test, thermal aging test, thermal cycle test and vibration test. Otherwise, they shall be separately specified in drawing
10、s. 7. CODING SYSTEM Test of insert shall be indicated as follows on drawings, etc.: (Ex) Test method of insert TO EDS-T-7534-6.1 Threaded type - Min. 4500 N Bushing type - Min. 80 N Requirements Insert type Test method(standard no.) Test item TO EDS-T-7534-6.2 Chemical resistance test - 80% min. Long-term thermal resistance test - 80% min. Thermal cycle resistance test - 80% min. Vibration resistance test - 80% min. Requirements Pre-treatment condition 8. RELATED STANDARDS EDS-T-7525 The test method for plastic cam cover EDS-T-7528 The test method for plastic air intake manifold
