吉林大学学报（地球科学版）
吉林大學學報（地毬科學版）
길림대학학보（지구과학판）
JOURNAL OF JILIN UNIVERSITY(EARTH SCIENCE EDITION)
2014年
4期
1276-1281
,共6页
高胎体金刚石钻头%金刚石孕镶块%钎焊法
高胎體金剛石鑽頭%金剛石孕鑲塊%釬銲法
고태체금강석찬두%금강석잉양괴%천한법
high matrix diamond bit%impregnated diamond block%welding method
为了提高金刚石钻头的时效和寿命，将钎焊法引入到高胎体金刚石钻头的设计和加工中。首先利用热压法加工耐磨性能好的金刚石孕镶块；然后加工自带两层水口和水槽的新型钻头钢体，且两水口之间预留焊接槽；最后采用钎焊法，将金刚石孕镶块焊接到钻头钢体上。野外试验表明，试制的2只Φ75/54．5 mm 高胎体金刚石钻头，与现场使用的孕镶金刚石钻头相比，钻进效率分别提高41．7％和8．3％，使用寿命分别提高50．4％和32．9％。采用二次钎焊法加工的金刚石钻头，兼顾了热压法的优点，解决了工作层高度过高导致钻头胎体折断、掉块的难题，明显提高了金刚石钻头的使用寿命。
為瞭提高金剛石鑽頭的時效和壽命，將釬銲法引入到高胎體金剛石鑽頭的設計和加工中。首先利用熱壓法加工耐磨性能好的金剛石孕鑲塊；然後加工自帶兩層水口和水槽的新型鑽頭鋼體，且兩水口之間預留銲接槽；最後採用釬銲法，將金剛石孕鑲塊銲接到鑽頭鋼體上。野外試驗錶明，試製的2隻Φ75/54．5 mm 高胎體金剛石鑽頭，與現場使用的孕鑲金剛石鑽頭相比，鑽進效率分彆提高41．7％和8．3％，使用壽命分彆提高50．4％和32．9％。採用二次釬銲法加工的金剛石鑽頭，兼顧瞭熱壓法的優點，解決瞭工作層高度過高導緻鑽頭胎體摺斷、掉塊的難題，明顯提高瞭金剛石鑽頭的使用壽命。
위료제고금강석찬두적시효화수명，장천한법인입도고태체금강석찬두적설계화가공중。수선이용열압법가공내마성능호적금강석잉양괴；연후가공자대량층수구화수조적신형찬두강체，차량수구지간예류한접조；최후채용천한법，장금강석잉양괴한접도찬두강체상。야외시험표명，시제적2지Φ75/54．5 mm 고태체금강석찬두，여현장사용적잉양금강석찬두상비，찬진효솔분별제고41．7％화8．3％，사용수명분별제고50．4％화32．9％。채용이차천한법가공적금강석찬두，겸고료열압법적우점，해결료공작층고도과고도치찬두태체절단、도괴적난제，명현제고료금강석찬두적사용수명。
Brazing method was introduced into designing and manufacturing diamond drill bit with high matrix to improve its drilling efficiency and extend its life.Firstly,impregnated diamond blocks with good wear resistance were manufactured by hot pressing method.Then new steel body of drill bit including multilayer nozzles and water way was designed,and the welding grooves were formed between two nozzles.Lastly,the impregnated diamond blocks were welded in the drill bit steel body.The life of diamond drill bit manufactured by welding method was improved obviously.Field experimental results showed that the drilling efficiency of two Φ75/54.5 mm high matrix diamond bits was increased by 41. 7% and 8.3% respectively,their lives were improved by 50.4% and 32.9% respectively compared with the conventional one.The two times braze welding method takes the advantage of hot pressing method, solves the breaking and blocking off problem of drilling bit,and improves its life greatly.
