SNIPIISINAPPROVEDDATEDESCRIPTIONPLASCOMPONENT LIST1) UNIDIRECTIONAL, FIXED- DISPLACEMENTHYDRAULIC PUMP AND MOTOR.2) HIGH-PRESSURE RELIEF VALVE3) 4-WAY, 3-POSITION, BLOCKED- CENTER,DOUBLE SOLENOID-ACTUATED, MAINTAINED-CONTACT, SPRING-CENTERED VALVE.4) LOW-PRESSURE RELIEF VALVE.5) FLOW CONTROL VALVE, ADJUSTABLEAND PRESSURE COMPENSATED WITHBYPASS.Sol. ASol. B6) PRESSURE SWITCHУХI7 DOUBLE-ACTING HYDRAULIC CYLINDER.8) LIMIT SWITCHTEMMHEAT TREATFINISHMATERIALSTOCK SIZEONNO.TALLEY INDUSTRIESMESA, ARIZONAMANUFACTURING ENGRG DEPTENGRG CHANGETOOL NAME90 TON HYDRAULIC PRESS SCHEMATICENGRG PART NAME90 TON COMPACTION PRESSUNLESS OTHERWISE NOTEDR.K. WALKER 8/28G.A.Schneider 8/28NMRATOLERANCES ON:ANGLES 1CHECKEDMACHINED DIA ON A COMMON CENTERLINE CONCENTRIC WITHIN005 T.I.RNORMALITY AND PARALLELISM OF MACHINED SURFACES .002 PER INCHTO A MAX. OF .010 FOR A SINGLE SURFACEREMOVE BURRS AND SHARP EDGES .030 MAXZONEAPPROVEDOF 1 SCCALESHEETENGRG PART NO.SIZE CODE IDENT, NO TOOL DRAWING N08568321ZNEA 12116449Unit 23 Instrumentation and Control Drawings00669TOCNDU CHPrint supplied by Talley IndustriePR 23-2. 90 Ton Hydraulic Press SchematicCopyright Goodheart-Willcox Co., Inc. Refer to print PR 23-2. The sequence of operations for this print is given below. Answer the questions following thesequence of operationsSequence of operationsDescription: This is a system to control a 90-ton hydraulic, explosive-compaction press. The press ram descends ata controlled rate, slowly compacting the explosive charge to avoid detonation due to a sudden shock.1. The cycle is started by energizing solenoid A, which shifts control valve (3) and supplies pressure tothe head end of the hydraulic cylinder (7). This operates the ram.2. The cylinder (7) extends at a slow rate controlled by the fluid in the rod end of the cylinder, which isvented through the flow control valve (5).3. When the cylinder is fully extended and the pressing pressure is reached, the press ure switch (6)de-energizes solenoid A and energizes solenoid B. This shifts control valve (3) to retract thecylinder (7). Control valve (5) has an integral check valve that permits the free flow of fluid in theopposite direction, causing cylinder (7) to rapidly retract.A The retraction of cylinder (7) actuates the limit switch (8), which de-energizes solenoid B. Controlvalve (3) returns to the neutral position. This completes the cycle. This circuit has safety features. Onpower outage, both solenoid A and B are de-energized. This allows valve (3) to return toelectricalthe center position, thus stopping ram travel. Also, valve (4) provides low pressure relief on the ramupstroke and valve (2) provides high pressure relief on ram downstroke.Questions8. What completes the cycle?9. What happens in the event of electrical power outage?10. Give the function of valves (2) and (4).

Question
Asked Nov 18, 2019
3 views

I need part 10 answered pertaining to the print and instructions. 

SNIPIISIN
APPROVED
DATE
DESCRIPTION
PLAS
COMPONENT LIST
1) UNIDIRECTIONAL, FIXED- DISPLACEMENT
HYDRAULIC PUMP AND MOTOR.
2) HIGH-PRESSURE RELIEF VALVE
3) 4-WAY, 3-POSITION, BLOCKED- CENTER,
DOUBLE SOLENOID-ACTUATED, MAINTAINED-
CONTACT, SPRING-CENTERED VALVE.
4) LOW-PRESSURE RELIEF VALVE.
5) FLOW CONTROL VALVE, ADJUSTABLE
AND PRESSURE COMPENSATED WITH
BYPASS.
Sol. A
Sol. B
6) PRESSURE SWITCH
УХI
7 DOUBLE-ACTING HYDRAULIC CYLINDER.
8) LIMIT SWITCH
TEM
M
HEAT TREAT
FINISH
MATERIAL
STOCK SIZE
ON
NO.
TALLEY INDUSTRIES
MESA, ARIZONA
MANUFACTURING ENGRG DEPT
ENGRG CHANGE
TOOL NAME
90 TON HYDRAULIC PRESS SCHEMATIC
ENGRG PART NAME
90 TON COMPACTION PRESS
UNLESS OTHERWISE NOTED
R.K. WALKER 8/28
G.A.Schneider 8/28
NMRA
TOLERANCES ON:
ANGLES 1
CHECKED
MACHINED DIA ON A COMMON CENTERLINE CONCENTRIC WITHIN
005 T.I.R
NORMALITY AND PARALLELISM OF MACHINED SURFACES .002 PER INCH
TO A MAX. OF .010 FOR A SINGLE SURFACE
REMOVE BURRS AND SHARP EDGES .030 MAX
ZONE
APPROVED
OF 1 SCCALE
SHEET
ENGRG PART NO.
SIZE CODE IDENT, NO TOOL DRAWING N0
8568321
ZNE
A 12116
449
Unit 23 Instrumentation and Control Drawings
00
669
TO
CN
DU CH
Print supplied by Talley Industrie
PR 23-2. 90 Ton Hydraulic Press Schematic
Copyright Goodheart-Willcox Co., Inc.
help_outline

Image Transcriptionclose

SNIPIISIN APPROVED DATE DESCRIPTION PLAS COMPONENT LIST 1) UNIDIRECTIONAL, FIXED- DISPLACEMENT HYDRAULIC PUMP AND MOTOR. 2) HIGH-PRESSURE RELIEF VALVE 3) 4-WAY, 3-POSITION, BLOCKED- CENTER, DOUBLE SOLENOID-ACTUATED, MAINTAINED- CONTACT, SPRING-CENTERED VALVE. 4) LOW-PRESSURE RELIEF VALVE. 5) FLOW CONTROL VALVE, ADJUSTABLE AND PRESSURE COMPENSATED WITH BYPASS. Sol. A Sol. B 6) PRESSURE SWITCH УХI 7 DOUBLE-ACTING HYDRAULIC CYLINDER. 8) LIMIT SWITCH TEM M HEAT TREAT FINISH MATERIAL STOCK SIZE ON NO. TALLEY INDUSTRIES MESA, ARIZONA MANUFACTURING ENGRG DEPT ENGRG CHANGE TOOL NAME 90 TON HYDRAULIC PRESS SCHEMATIC ENGRG PART NAME 90 TON COMPACTION PRESS UNLESS OTHERWISE NOTED R.K. WALKER 8/28 G.A.Schneider 8/28 NMRA TOLERANCES ON: ANGLES 1 CHECKED MACHINED DIA ON A COMMON CENTERLINE CONCENTRIC WITHIN 005 T.I.R NORMALITY AND PARALLELISM OF MACHINED SURFACES .002 PER INCH TO A MAX. OF .010 FOR A SINGLE SURFACE REMOVE BURRS AND SHARP EDGES .030 MAX ZONE APPROVED OF 1 SCCALE SHEET ENGRG PART NO. SIZE CODE IDENT, NO TOOL DRAWING N0 8568321 ZNE A 12116 449 Unit 23 Instrumentation and Control Drawings 00 669 TO CN DU CH Print supplied by Talley Industrie PR 23-2. 90 Ton Hydraulic Press Schematic Copyright Goodheart-Willcox Co., Inc.

fullscreen
Refer to print PR 23-2. The sequence of operations for this print is given below. Answer the questions following the
sequence of operations
Sequence of operations
Description: This is a system to control a 90-ton hydraulic, explosive-compaction press. The press ram descends at
a controlled rate, slowly compacting the explosive charge to avoid detonation due to a sudden shock.
1. The cycle is started by energizing solenoid A, which shifts control valve (3) and supplies pressure to
the head end of the hydraulic cylinder (7). This operates the ram.
2. The cylinder (7) extends at a slow rate controlled by the fluid in the rod end of the cylinder, which is
vented through the flow control valve (5).
3. When the cylinder is fully extended and the pressing pressure is reached, the press ure switch (6)
de-energizes solenoid A and energizes solenoid B. This shifts control valve (3) to retract the
cylinder (7). Control valve (5) has an integral check valve that permits the free flow of fluid in the
opposite direction, causing cylinder (7) to rapidly retract.
A The retraction of cylinder (7) actuates the limit switch (8), which de-energizes solenoid B. Control
valve (3) returns to the neutral position. This completes the cycle. This circuit has safety features. On
power outage, both solenoid A and B are de-energized. This allows valve (3) to return to
electrical
the center position, thus stopping ram travel. Also, valve (4) provides low pressure relief on the ram
upstroke and valve (2) provides high pressure relief on ram downstroke.
Questions
8. What completes the cycle?
9. What happens in the event of electrical power outage?
10. Give the function of valves (2) and (4).
help_outline

Image Transcriptionclose

Refer to print PR 23-2. The sequence of operations for this print is given below. Answer the questions following the sequence of operations Sequence of operations Description: This is a system to control a 90-ton hydraulic, explosive-compaction press. The press ram descends at a controlled rate, slowly compacting the explosive charge to avoid detonation due to a sudden shock. 1. The cycle is started by energizing solenoid A, which shifts control valve (3) and supplies pressure to the head end of the hydraulic cylinder (7). This operates the ram. 2. The cylinder (7) extends at a slow rate controlled by the fluid in the rod end of the cylinder, which is vented through the flow control valve (5). 3. When the cylinder is fully extended and the pressing pressure is reached, the press ure switch (6) de-energizes solenoid A and energizes solenoid B. This shifts control valve (3) to retract the cylinder (7). Control valve (5) has an integral check valve that permits the free flow of fluid in the opposite direction, causing cylinder (7) to rapidly retract. A The retraction of cylinder (7) actuates the limit switch (8), which de-energizes solenoid B. Control valve (3) returns to the neutral position. This completes the cycle. This circuit has safety features. On power outage, both solenoid A and B are de-energized. This allows valve (3) to return to electrical the center position, thus stopping ram travel. Also, valve (4) provides low pressure relief on the ram upstroke and valve (2) provides high pressure relief on ram downstroke. Questions 8. What completes the cycle? 9. What happens in the event of electrical power outage? 10. Give the function of valves (2) and (4).

fullscreen
check_circle

Expert Answer

Step 1

In the given sketch,

Number 2 and Number 4 are relief valves. 

Number 2 is high-pressure relief valve.

Number 4 is low pressure relief valve.

W
Sol. A
Sol. B
M
help_outline

Image Transcriptionclose

W Sol. A Sol. B M

fullscreen
Step 2

Function of high-pressure valve:

Function of these valves are to release excess pressure when it experiences extra pressure. It provides safety to the other aligned components of the system. It prevents busting of pipelines of the system. These valves are capable of running all the time.

Boilers and ot...

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in

Engineering

Mechanical Engineering

Related Mechanical Engineering Q&A

Find answers to questions asked by student like you

Show more Q&A add
question_answer

Q: Decarburization of a steel occurs when carbon diffuses from the steel to the surface and enters the ...

A: Concentration of carbon on the steel plate with respect to time is calculated as,

question_answer

Q: The density of a floating object can be determined by tying just enough weight to the object to subm...

A: a. 42 kg of lead results the wood log to submerge it in the water. Thus, the force of buoyancy which...

question_answer

Q: In the system shown in the figure, the spring stiffness k = 2 × 103 N/m and the total massof the sys...

A: a) The free body diagram at the instant t, the mass system displaced x distance from the initial pos...

question_answer

Q: I need answers for problems 10, 11, and 12 pertaining to the print.

A: When any dimension enclosed in a parentheses, it will indicates that the given dimension is a refere...

question_answer

Q: Weight and Balance Find the Empty Weight CG location for the following tricycle gear aircraft. Each ...

A: Consider the moment diagram of the tricycle gear aircraft.

question_answer

Q: I need answers to questions 1, 2, and 3 pertaining to the print provided.

A: There are 6 columns which are featured in the revision history block of this drawing. And that colum...

question_answer

Q: Except for using table for getting thermal efficiency of fins, How can I derive a formula?

A: Assume, the temperature of the plane wall’s surface of the fin which is exposed to the medium as T∞ ...

question_answer

Q: Can any help find the reactions and moments for the these two  problems.  They are somewhat similar ...

A: You have asked two questions at a time and according to the guideline, we do not answer more than on...

question_answer

Q: What should you do if you suspect that an alternative refrigerant had been used in the A/C system an...

A: Due to the use of alternative refrigerant, the A/C system suffered a failure. To restore its perform...