Betono siurblio tepalas

Betono siurblio centrinės tepimo sistemos tepalai 

Rūšis

Darbinės temperatūros, ºC

Lašėjimo temperatūra, ºC

Pagrindas

Panaudojimas, savybės

 

 

Molylub

Lycos ZS

 

 

 

 

-40 iki +120

 

 

 

170

 

 

 

Mineral + Li

 

Pusiau skystas centrinių tepimo sistemų konsistencinis tepalas. Sunkvežimių, statybos technikos (tame tarpe betono padavimo mašinų) sistemoms, staklėms.

Rusvas. K00/000K-40 pagal DIN 51825; GP 00/00 K-40 pagal ISO-L-XDCHB 00/000; NLGI 00 - 000; Willy Vogel aprobacija.   

 

                                   Molylub Lycos ZS

Centrinių tepimo sistemų konsistencinis tepalas

Vokietijos kompanijos Molylub sukurtas specialus pramoninis tepalas, gaminamas ličio hidroksisteratinio muilo tirštintojo, bei nuo oksidacijos, susidėvėjimo ir rūdžių apsaugančių priedų pagrindu.

Pritaikymas

  •   Ypač rekomenduojama slydimo ir riedėjimo guoliams, tepamiems bendra centrine tepimo sistema
  •  Pavaroms, tepamoms taškiniu tepimu automatiniais lubrikatoriais
  •   Žematemperatūriniu režimu dirbantiems mechanizmams, kai reikia užtikrinti pakankamą tepalo takumą ir nestingimą net prie žemiausių temperatūrų                                                                                                                              
  • „Multiline“ tipo centrinėms tepimo sistemos                                                                                           
  • Komercinio auto transporto, bekelės, statybinės, kelių tiesimo, mobilių betono padavimo siurblių, karinės technikos centrinėms tepimo sistemoms                                                                                                                                                 
  • Hidraulinių presų sunkiai apkrautų mazgų tepimui Voegel automatine tepimo sistema

Eksploatacinės charakteristikos                                                                                                        

Didelė mechaninių krūvių pernešimo geba                                                                                                    

Ypatingas takumas ir pumpuojamumasis ilgomis centrinių tepimo sistemų vamzdelių atkarpomis                                                                                                      

Labai atsparus vandens nuplovimui                                                                                                                                                               

Sumažina energijos sunaudojimą palengvindamas guolio darbinį sukimąsį                                                                                                                  

Puikus konsistencijos stabilumas svyruojant temperatūroms                                                                            

Ekolgiškai saugus, sudėtyje nėra agrersyvių bario ir chloro junginių                                                                                                                      

Specifikacijos ir patvirtinimai                                                                                                         

§ Atitinka ir viršyja DIN 51 502 klasifikaciją K00/000K-40                                                                              

§ Atitinka ISO-L-XCDHB 000 pagal ISO/DIS 6743-9 reikalavimus                                                                    

§ Willy Vogel AG, Blatt 264      /   Bielomatic; Zentralschmiertechnik   / MAN 264.0 / 283                                   

Būdingos fizikinės charakteristikos

Lycos

Metodas

ZS

NLGI koncistencija

DIN 51 818

00 - 000

Spalva

 

Rusva

Tirštintojo tipas

 

Ličio

hidroksisteratas

Bazinė alyva (tipas)

DIN 51 562

Mineralinė ISO VG 68

Lašėjimo pradžios taškas,°C

DIN ISO 2176

> 170

Kūginis įsiskverbimas

 @ 25°C   0.1mm

DIN ISO 2137

 

430 - 460

Oksidacinis atsparumas , bar   

DIN 51 808

0,2

Darbinės temperatūros,°C

 

-40 iki +130

Pumpavimas ilga atkarpa

 

Ypač Geras

 

Patarimai : Informaciją apie alyvos panaudojimą, nenurodytą šiame aprašyme, galite gauti iš vietinio Molylub atstovo Pramonei : tel. (682)29 049 ar el-paštu : info@mechanica.lt

 

Concrete Pump Greases

Collar NLGI 000 fat reducer concrete pumping grease

When pumping, the maximum size of the coarse aggregate is limited to one-third of the smallest

inside diameter of the pump or placing line. For example, 1-1/2 inch aggregate would require a

minimum placing line diameter of 4-1/2 inches.

 The properties of the fine aggregate or sand are more important in the proportioning of pumpable

mixes than are those of the coarse aggregate. If the sand is overly coarse, it will make a normally

pumpable mix design difficult to pump while fine sand will make coarse mixes pumpable.

 The fineness modulus of sand meeting ASTM C 33 gradation specifications will fall between 2.30

and 3.10 with the median being 2.70. The higher the fineness modulus, the coarser the sand.

Pumpability of mixtures is generally improved with a decrease in the fineness modulus, or in other

words, with the use of finer sands. However, sands having a fineness modulus between 2.40 and

3.00 are generally satisfactory. Sands with a fineness modulus in excess of 3.00 are difficult to pump.

 Lightweight coarse aggregate for pumping must be pre-soaked in stockpiles or bunkers prior to use.

Generally a minimum of three to five days of sprinkling is recommended. It is important to turn the

stock pile during soaking to insure uniform and complete saturation.

 Reducers and bends in the placing line, such as elbows or hoses, create turbulence inside the line.

A well-graded mix with the proper mortar (cement paste) will move easily through the pipeline, while a

lean or poorly-graded mix may not. A reducer is usually the first place to look when a plug occurs.

(Remember: Always relieve pressure in the placing line by pumping a few strokes in reverse before

opening a coupling.)

 Tests by the National Ready Mixed Concrete Association have determined that entrained air can be

lost when concrete is allowed to slide down the five-inch diameter pipeline of long truck booms under

its own weight. To prevent air loss when pumping, it is advisable to prevent the concrete from ―free

falling‖ by keeping the tip section level, by adding a smaller diameter discharge hose or laying a

discharge hose on the deck. When testing labs take samples, the tester should get the sample from

the normally placed concrete. They should not stop the pump and place a small quantity dropped

from the boom into a wheel barrow. Concrete must not be allowed to free fall into the tester‘s

container.

 Both steel fiber and synthetic fiber reinforced concrete can be pumped.

 Concrete mixes often contain a variety of admixtures. Any admixture that improves the workability,

generally will improve the pumpability. Some of these admixtures are water-reducing admixtures.

Most water-reducing admixtures will improve the pumpability of the mix as long as sufficient free

water remains. High-range water reducers (super-plasticizers) increase the slump dramatically and

improve the pumpability, especially on high-rise jobs, lightweight jobs or long distance pushes.

However, remember super-plasticizers are only effective for a limited time. Once the time has run out,

the concrete returns to the state it would have been had the super-plasticizers not been added. At

that time, the slump may drop rapidly.

 Another common admixture is air entrainment. Air entrainment is added to concrete to keep the

concrete from breaking down and spalling during freeze/thaw cycles so it is more common in harsh-11

winter regions. Air entrainment up to six percent will generally make the mix more pumpable.

However, low slump mixes with high air content (above eight percent), are difficult to pump. It could

be compared to trying to push a beach ball through a hole. Air-entrained mixes are generally more

plastic and more workable than non-air entrained mixes and less inclined to separate or bleed.

 Pumpers often want to add water to concrete to make it pump easier. Water should only be added

by the contractor, or his designated representative. Excess water alters the mix design by increasing

the water-cement ratio, which can lead to decreased strength and excessive shrinkage. Excess water

can also cause segregation, which is the separation of the components of the concrete. Segregation

can also be caused by dropping concrete which causes the lighter mortar and sand to separate from

the rock.

 When priming, remember to pump the primer into the valve and placing line ahead of the concrete

to keep the slurry from mixing with the concrete in the hopper. This could cause you to be short of

primer resulting in a plug, and it could cause a problem if the primer is discharged into the forms. Use

the prime port on the machine, if available.

 While modern concrete batch plants usually produce a consistent product, occasionally problems

occur. It is possible that one component could be omitted or aggregate from certain areas of a

stockpile could be different. Dramatic changes in pumping pressure from one load to another could

signal a ―problem‖ load. Sometimes a ―problem‖ load can be blended with one or more loads, and

therefore, not be wasted.

 The pump should be located as near the placing area as is possible and concrete placing should

commence at the point most distant from the pump. This allows the entire placing line to be grouted

before concrete placing begins.

 The valve in a concrete pump must be kept in good repair. If the valve is allowed to wear

excessively, mortar may be squeezed out of the mix causing plugs. Some valves require periodic

adjustments to control the loss of mortar out of the valve.

 Badly worn piston heads in concrete cylinders can allow water from the water box to be admitted

into the concrete, causing higher slumps and possibly separation and plugging, as well as lower

concrete strengths.

 It is important to monitor the temperature of your hydraulic oil while pumping. If the oil gets hot you

should:

1. Stop pumping.

2. Check to see if your oil cooler is working. Some pumps have an override to turn on the cooler

fan.

3. Quickly attempt to locate the heat source; such as an outrigger valve or other valve left in the

wrong position.

4. Make certain the water box is full of water.

5. Spray a mist of cool water over the hydraulic system and hydraulic oil tank.

6. Slow down the pumping speed.

* If you are consistently overheating you possibly are developing a problem with the concrete pump,

such as worn piston rings or a low-pressure relief valve setting. You could be running the wrong 12

grade of hydraulic oil.