Bultserviceparametrar
Parameter | Standardvärde | Enhet | Beskrivning | Kommentar | |
|---|---|---|---|---|---|
a All default values are tailored for an M36 bolt running with min angle 40 degrees and no max angle. b The rotation detection parameters define an expected play in the wrench-socket-gear box chain. The experience is that this can vary a lot depending on, mainly bolt geometry – even when the tool is attached to the same bolt but the socket aligns to different sides of the nut. c The rotation detection parameters define an expected play in the wrench-socket-gear box chain. The experience is that this can vary a lot depending on, mainly bolt geometry – even when the tool is attached to the same bolt but the socket aligns to different sides of the nut. | |||||
|
Namn | User name of the step configuration, written in the xml report file and reported in the step Results. | ||||
Bultdimension | M36 a | mm | The size of the bolt for the configuration intended for it. The bolt size is compared to the connected tool and if it does not match, an invalid configuration event is emitted. | The controller GUI filters out the configurations that fit the connected tools. Configurations made for other tool sizes are not displayed in the list under Tasks > Bolt Service or Tasks > Batch Bolt Service. | |
Tensioner type | Flange bolt | Tensioner type must match the connected tensioner. The string is compared to the string that identifies the type of tensioner which is programmed in the tensioner during its production. The string is case sensitive when compared to the string in the tensioner. | The controller GUI filters out the configurations that fit the connected tools. Configurations made for other tensioner types are not displayed in the list under Tasks > Bolt Service or Tasks > Batch Bolt Service. | ||
Max delta nut rotation | 13 | Grader | The max total allowed rotation of the nut for the bolt service process, i.e. the maximum nut rotation in tightening direction compared to the starting point. | See also section Bolt Service Process. | |
Min delta nut rotation | 0 | Grader | The minimum actual nut rotation that is allowed for the bolt service process. | Min delta nut rotation and max delta nut rotation create a range of accepted result of the bolt process, e.g. 0.13 - the nut needs to return to its original position (Min delta nut rotation = 0) but must not rotate more than 13 degrees in the tightening direction Max delta nut rotation = 13). A value < 0 for Min delta nut rotation allows that the nut does not return completely to the original position. | |
Use clamping force estimation | På | Controls which clamping force estimation is used for the result. On -> Clamping force estimation is used: tensioning force – Estimated Initial mean settlement Off -> clamping force is calculated according to Load Transfer Factor equation: tensioning force / (1.01 + (bolt diameter / clamping length)) | The Atlas Copco (AC) Load Transfer Factor (LTF) equation utilized in the STS is for use on ‘Flange’ connected joints only. Do NOT use on foundation style joints. | ||
Clamping length | mm | The height of the flange, i.e. the distance between the nuts on each side of the flange. | |||
Estimated initial mean settlement | 99 | kN | An estimation of the mean force loss when releasing the pressure. Active when: Use clamping force estimation is ’On’. | Visible if Use clamping force estimation is ’On’. It is used in the xml report generation. The value depends on the tensioner size and the type of the flange. | |
Estimated initial max settlement | 155 | kN | An estimation of the maximum force loss when releasing the pressure. Active when: Use clamping force estimation is ’On’. | Visible if Use clamping force estimation is ’On’. It is used in the xml report generation. The value depends on the tensioner size and the type of the flange. | |
Min required average clamping force | 510 | kN | The minimum average clamping force for all bolts on the flange used in flange summary section in the xml report. | It is used in the xml report generation. The value depends on the tensioner size and the type of the flange. | |
Batch job report type | Allmänt | Controls the flange summary generation in the xml reports:
| |||
Nut loosening attempt count torque | 75 | Nm | The torque limit for a loosening attempt. If the number of attempts passes Nut loosening number of attempts, the bolt service process prompts the user to tighten the bolt again because it was not possible to loosen it. | ||
Nut loosening number of attempts | 3 | The number of attempts with torque higher than Nut loosening attempt count torque before prompting the user to tighten the nut again since it was not possible to loosen it. | |||
Nut loosening min loosening angle | 10 | Grader | The required loosening angle for an acknowledged bolt service operation. | ||
Angle sensor reset force | 100 | kN | The force at which the angle measurement reference for 0 degrees is set. | The expected angles are calculated depending on the force increase from the angle sensor reset force to Min bolt tensioning pressure. This evaluates to different pressures depending on the tensioner size, see the table in the section Pressures for Different Tensioner Sizes. The larger the tensioner is, the higher the angle reset force must be set, due to issues with control of low pressures in installation check step. This is necessary in order to avoid overshooting of Installation check hydraulic pressure higher than pressure equivalent of angle sensor reset force. | |
Min bolt tensioning pressure | 1900 | Bar | The min pressure for an OK tensioning result. | The pressure control in the system will set a target higher than the Min bolt tensioning pressure to avoid pressure drop ending in a NOK result. See picture in the chapter Hydraulic Pressure Target Window. | |
Max system hydraulic pressure | 1980 | Bar | The highest pressure the pressure control in the hand controller allows for this configuration. | The actual max pressure is the lowest of the max pressures in the pump and tensioner and the Max system hydraulic pressure of the configuration. | |
Min bolt tensioning force | 698 | kN | Force equivalent of the Min bolt tensioning pressure parameter. | Value manually calculated from bolt pressure. This value is written in the xml report files, but it is not used by the hand controller's software. | |
Installationschecklista | 20 | Nm | The required torque for an acknowledged installation check. | ||
Installation check torque duration | 1.0 | L | The required time the Installation check torque that must be applied for an acknowledged installation check. | ||
Sista åtdragningens målmoment | 100 | Nm | The required torque for an acknowledged tightening of the nut. | ||
Åtdragningsmoment resultat | 1.0 | L | The required torque for an acknowledged tightening of the nut. | ||
Tightening unexpected clockwise rotation detection angle | 5 | Grader | The maximum allowed change of the nut rotation angle in clockwise direction when the process is waiting for pressure release. | To avoid the risk of nut rotation while the system waits for pressure release, activate automatic pressure release (see section Tool Configuration). b | |
Tightening unexpected counter clockwise rotation detection angle | 5 | Grader | The maximum allowed change of the nut rotation angle in counter clockwise direction when the process is waiting for pressure release. | To avoid the risk of nut rotation while the system waits for pressure release, activate automatic pressure release (see section Tool Configuration). c | |
Installation check hydraulic pressure | 20 | Bar | The pressure set point for installation check. | The installation check pressure fixes the tensioner to the flange during the installation check. The installation check pressure, including overshoot, must not exceed the pressure equivalent of Angle sensor reset force. | |
Hydraulic pressure set point factor | 1.025 | 1.025 | The actual set point for the pressure regulation is calculated as follows: Min bolt tensioning pressure timesHydraulic pressure set point factor. See the picture in the section Hydraulic Pressure Target Window. | When pressing and holding the pressurization button, the system is pressurized, the pressure will be held inside a pressure window above Min bolt tensioning pressure. | |
